From 023c0ecac65ee7a3c991f4ea186af863a096ee69 Mon Sep 17 00:00:00 2001
From: Rahul Rao <63695122+rahulrao0209@users.noreply.github.com>
Date: Sun, 16 Jul 2023 17:49:30 +0530
Subject: [PATCH 01/21] Fixing a minor grammatical typo in the document.

Fixing a minor grammatical typo in the selection and range markdown document.
---
 2-ui/99-ui-misc/02-selection-range/article.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/2-ui/99-ui-misc/02-selection-range/article.md b/2-ui/99-ui-misc/02-selection-range/article.md
index 819bcba29..09a20bc67 100644
--- a/2-ui/99-ui-misc/02-selection-range/article.md
+++ b/2-ui/99-ui-misc/02-selection-range/article.md
@@ -354,7 +354,7 @@ The main selection properties are:
 
 ```smart header="Selection end/start vs Range"
 
-There's an important differences of a selection anchor/focus compared with a `Range` start/end.
+There's an important difference between a selection anchor/focus compared with a `Range` start/end.
 
 As we know, `Range` objects always have their start before the end. 
 

From d51037aadbd8ef31cebf11549583a4b9a504f23d Mon Sep 17 00:00:00 2001
From: nakhodkin <14351638+nakhodkin@users.noreply.github.com>
Date: Wed, 27 Dec 2023 20:03:05 +0200
Subject: [PATCH 02/21] Fix grammar and add an example

---
 1-js/05-data-types/02-number/article.md | 34 +++++++++++++++----------
 1 file changed, 20 insertions(+), 14 deletions(-)

diff --git a/1-js/05-data-types/02-number/article.md b/1-js/05-data-types/02-number/article.md
index c704bd980..a96e4e688 100644
--- a/1-js/05-data-types/02-number/article.md
+++ b/1-js/05-data-types/02-number/article.md
@@ -4,7 +4,7 @@ In modern JavaScript, there are two types of numbers:
 
 1. Regular numbers in JavaScript are stored in 64-bit format [IEEE-754](https://en.wikipedia.org/wiki/IEEE_754), also known as "double precision floating point numbers". These are numbers that we're using most of the time, and we'll talk about them in this chapter.
 
-2. BigInt numbers represent integers of arbitrary length. They are sometimes needed because a regular integer number can't safely exceed <code>(2<sup>53</sup>-1)</code> or be less than <code>-(2<sup>53</sup>-1)</code>, as we mentioned earlier in the chapter <info:types>. As bigints are used in few special areas, we devote them a special chapter <info:bigint>.
+2. BigInt numbers represent integers of arbitrary length. They are sometimes needed because a regular integer number can't safely exceed <code>(2<sup>53</sup>-1)</code> or be less than <code>-(2<sup>53</sup>-1)</code>, as we mentioned earlier in the chapter <info:types>. As bigints are used in a few special areas, we devote them to a special chapter <info:bigint>.
 
 So here we'll talk about regular numbers. Let's expand our knowledge of them.
 
@@ -41,7 +41,7 @@ In other words, `e` multiplies the number by `1` with the given zeroes count.
 1.23e6 === 1.23 * 1000000; // e6 means *1000000
 ```
 
-Now let's write something very small. Say, 1 microsecond (one millionth of a second):
+Now let's write something very small. Say, 1 microsecond (one-millionth of a second):
 
 ```js
 let mсs = 0.000001;
@@ -103,13 +103,13 @@ alert( num.toString(16) );  // ff
 alert( num.toString(2) );   // 11111111
 ```
 
-The `base` can vary from `2` to `36`. By default it's `10`.
+The `base` can vary from `2` to `36`. By default, it's `10`.
 
 Common use cases for this are:
 
 - **base=16** is used for hex colors, character encodings etc, digits can be `0..9` or `A..F`.
 - **base=2** is mostly for debugging bitwise operations, digits can be `0` or `1`.
-- **base=36** is the maximum, digits can be `0..9` or `A..Z`. The whole latin alphabet is used to represent a number. A funny, but useful case for `36` is when we need to turn a long numeric identifier into something shorter, for example to make a short url. Can simply represent it in the numeral system with base `36`:
+- **base=36** is the maximum, digits can be `0..9` or `A..Z`. The whole Latin alphabet is used to represent a number. A funny, but useful case for `36` is when we need to turn a long numeric identifier into something shorter, for example, to make a short url. Can simply represent it in the numeral system with base `36`:
 
     ```js run
     alert( 123456..toString(36) ); // 2n9c
@@ -188,7 +188,7 @@ There are two ways to do so:
     alert( num.toFixed(5) ); // "12.34000", added zeroes to make exactly 5 digits
     ```
 
-    We can convert it to a number using the unary plus or a `Number()` call, e.g write `+num.toFixed(5)`.
+    We can convert it to a number using the unary plus or a `Number()` call, e.g. write `+num.toFixed(5)`.
 
 ## Imprecise calculations
 
@@ -222,7 +222,13 @@ But why does this happen?
 
 A number is stored in memory in its binary form, a sequence of bits - ones and zeroes. But fractions like `0.1`, `0.2` that look simple in the decimal numeric system are actually unending fractions in their binary form.
 
-What is `0.1`? It is one divided by ten `1/10`, one-tenth. In decimal numeral system such numbers are easily representable. Compare it to one-third: `1/3`. It becomes an endless fraction `0.33333(3)`.
+```js run
+alert(0.1.toString(2)); // 0.0001100110011001100110011001100110011001100110011001101
+alert(0.2.toString(2)); // 0.001100110011001100110011001100110011001100110011001101
+alert((0.1 + 0.2).toString(2)); // 0.0100110011001100110011001100110011001100110011001101
+```
+
+What is `0.1`? It is one divided by ten `1/10`, one-tenth. In the decimal numeral system, such numbers are easily representable. Compare it to one-third: `1/3`. It becomes an endless fraction `0.33333(3)`.
 
 So, division by powers `10` is guaranteed to work well in the decimal system, but division by `3` is not. For the same reason, in the binary numeral system, the division by powers of `2` is guaranteed to work, but `1/10` becomes an endless binary fraction.
 
@@ -242,7 +248,7 @@ That's why `0.1 + 0.2` is not exactly `0.3`.
 ```smart header="Not only JavaScript"
 The same issue exists in many other programming languages.
 
-PHP, Java, C, Perl, Ruby give exactly the same result, because they are based on the same numeric format.
+PHP, Java, C, Perl, and Ruby give exactly the same result, because they are based on the same numeric format.
 ```
 
 Can we work around the problem? Sure, the most reliable method is to round the result with the help of a method [toFixed(n)](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toFixed):
@@ -266,7 +272,7 @@ alert( (0.1 * 10 + 0.2 * 10) / 10 ); // 0.3
 alert( (0.28 * 100 + 0.14 * 100) / 100); // 0.4200000000000001
 ```
 
-So, multiply/divide approach reduces the error, but doesn't remove it totally.
+So, the multiply/divide approach reduces the error, but doesn't remove it totally.
 
 Sometimes we could try to evade fractions at all. Like if we're dealing with a shop, then we can store prices in cents instead of dollars. But what if we apply a discount of 30%? In practice, totally evading fractions is rarely possible. Just round them to cut "tails" when needed.
 
@@ -288,7 +294,7 @@ Another funny consequence of the internal representation of numbers is the exist
 
 That's because a sign is represented by a single bit, so it can be set or not set for any number including a zero.
 
-In most cases the distinction is unnoticeable, because operators are suited to treat them as the same.
+In most cases, the distinction is unnoticeable, because operators are suited to treat them as the same.
 ```
 
 ## Tests: isFinite and isNaN
@@ -337,7 +343,7 @@ Please note that an empty or a space-only string is treated as `0` in all numeri
 ````smart header="`Number.isNaN` and `Number.isFinite`"
 [Number.isNaN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN) and [Number.isFinite](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite) methods are the more "strict" versions of `isNaN` and `isFinite` functions. They do not autoconvert their argument into a number, but check if it belongs to the `number` type instead.
 
-- `Number.isNaN(value)` returns `true` if the argument belongs to the `number` type and it is `NaN`. In any other case it returns `false`.
+- `Number.isNaN(value)` returns `true` if the argument belongs to the `number` type and it is `NaN`. In any other case, it returns `false`.
 
     ```js run
     alert( Number.isNaN(NaN) ); // true
@@ -348,7 +354,7 @@ Please note that an empty or a space-only string is treated as `0` in all numeri
     alert( isNaN("str") ); // true, because isNaN converts string "str" into a number and gets NaN as a result of this conversion
     ```
 
-- `Number.isFinite(value)` returns `true` if the argument belongs to the `number` type and it is not `NaN/Infinity/-Infinity`. In any other case it returns `false`.
+- `Number.isFinite(value)` returns `true` if the argument belongs to the `number` type and it is not `NaN/Infinity/-Infinity`. In any other case, it returns `false`.
 
     ```js run
     alert( Number.isFinite(123) ); // true
@@ -367,7 +373,7 @@ In a way, `Number.isNaN` and `Number.isFinite` are simpler and more straightforw
 There is a special built-in method `Object.is` that compares values like `===`, but is more reliable for two edge cases:
 
 1. It works with `NaN`: `Object.is(NaN, NaN) === true`, that's a good thing.
-2. Values `0` and `-0` are different: `Object.is(0, -0) === false`, technically that's correct, because internally the number has a sign bit that may be different even if all other bits are zeroes.
+2. Values `0` and `-0` are different: `Object.is(0, -0) === false`, technically that's correct because internally the number has a sign bit that may be different even if all other bits are zeroes.
 
 In all other cases, `Object.is(a, b)` is the same as `a === b`.
 
@@ -385,7 +391,7 @@ alert( +"100px" ); // NaN
 
 The sole exception is spaces at the beginning or at the end of the string, as they are ignored.
 
-But in real life we often have values in units, like `"100px"` or `"12pt"` in CSS. Also in many countries the currency symbol goes after the amount, so we have `"19€"` and would like to extract a numeric value out of that.
+But in real life, we often have values in units, like `"100px"` or `"12pt"` in CSS. Also in many countries, the currency symbol goes after the amount, so we have `"19€"` and would like to extract a numeric value out of that.
 
 That's what `parseInt` and `parseFloat` are for.
 
@@ -479,4 +485,4 @@ For fractions:
 
 More mathematical functions:
 
-- See the [Math](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Math) object when you need them. The library is very small, but can cover basic needs.
+- See the [Math](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Math) object when you need them. The library is very small but can cover basic needs.

From c66baceac6ff150d1d562f94ce82318ea731259d Mon Sep 17 00:00:00 2001
From: nakhodkin <14351638+nakhodkin@users.noreply.github.com>
Date: Sun, 31 Dec 2023 20:49:11 +0200
Subject: [PATCH 03/21] Fix grammar and typos

---
 .../05-data-types/05-array-methods/article.md | 48 +++++++++----------
 1 file changed, 24 insertions(+), 24 deletions(-)

diff --git a/1-js/05-data-types/05-array-methods/article.md b/1-js/05-data-types/05-array-methods/article.md
index 4db1a16b6..853645958 100644
--- a/1-js/05-data-types/05-array-methods/article.md
+++ b/1-js/05-data-types/05-array-methods/article.md
@@ -1,6 +1,6 @@
 # Array methods
 
-Arrays provide a lot of methods. To make things easier, in this chapter they are split into groups.
+Arrays provide a lot of methods. To make things easier, in this chapter, they are split into groups.
 
 ## Add/remove items
 
@@ -32,11 +32,11 @@ alert( arr.length ); // 3
 
 The element was removed, but the array still has 3 elements, we can see that `arr.length == 3`.
 
-That's natural, because `delete obj.key` removes a value by the `key`. It's all it does. Fine for objects. But for arrays we usually want the rest of elements to shift and occupy the freed place. We expect to have a shorter array now.
+That's natural, because `delete obj.key` removes a value by the `key`. It's all it does. Fine for objects. But for arrays we usually want the rest of the elements to shift and occupy the freed place. We expect to have a shorter array now.
 
 So, special methods should be used.
 
-The [arr.splice](mdn:js/Array/splice) method is a swiss army knife for arrays. It can do everything: insert, remove and replace elements.
+The [arr.splice](mdn:js/Array/splice) method is a Swiss army knife for arrays. It can do everything: insert, remove and replace elements.
 
 The syntax is:
 
@@ -62,7 +62,7 @@ alert( arr ); // ["I", "JavaScript"]
 
 Easy, right? Starting from the index `1` it removed `1` element.
 
-In the next example we remove 3 elements and replace them with the other two:
+In the next example, we remove 3 elements and replace them with the other two:
 
 ```js run
 let arr = [*!*"I", "study", "JavaScript",*/!* "right", "now"];
@@ -84,7 +84,7 @@ let removed = arr.splice(0, 2);
 alert( removed ); // "I", "study" <-- array of removed elements
 ```
 
-The `splice` method is also able to insert the elements without any removals. For that we need to set `deleteCount` to `0`:
+The `splice` method is also able to insert the elements without any removals. For that, we need to set `deleteCount` to `0`:
 
 ```js run
 let arr = ["I", "study", "JavaScript"];
@@ -114,7 +114,7 @@ alert( arr ); // 1,2,3,4,5
 
 ### slice
 
-The method [arr.slice](mdn:js/Array/slice) is much simpler than similar-looking `arr.splice`.
+The method [arr.slice](mdn:js/Array/slice) is much simpler than the similar-looking `arr.splice`.
 
 The syntax is:
 
@@ -124,7 +124,7 @@ arr.slice([start], [end])
 
 It returns a new array copying to it all items from index `start` to `end` (not including `end`). Both `start` and `end` can be negative, in that case position from array end is assumed.
 
-It's similar to a string method `str.slice`, but instead of substrings it makes subarrays.
+It's similar to a string method `str.slice`, but instead of substrings, it makes subarrays.
 
 For instance:
 
@@ -206,7 +206,7 @@ The [arr.forEach](mdn:js/Array/forEach) method allows to run a function for ever
 The syntax:
 ```js
 arr.forEach(function(item, index, array) {
-  // ... do something with item
+  // ... do something with an item
 });
 ```
 
@@ -239,7 +239,7 @@ The methods [arr.indexOf](mdn:js/Array/indexOf) and [arr.includes](mdn:js/Array/
 - `arr.indexOf(item, from)` -- looks for `item` starting from index `from`, and returns the index where it was found, otherwise `-1`.
 - `arr.includes(item, from)` -- looks for `item` starting from index `from`, returns `true` if found.
 
-Usually these methods are used with only one argument: the `item` to search. By default, the search is from the beginning.
+Usually, these methods are used with only one argument: the `item` to search. By default, the search is from the beginning.
 
 For instance:
 
@@ -255,7 +255,7 @@ alert( arr.includes(1) ); // true
 
 Please note that `indexOf` uses the strict equality `===` for comparison. So, if we look for `false`, it finds exactly `false` and not the zero.
 
-If we want to check if `item` exists in the array, and don't need the index, then `arr.includes` is preferred.
+If we want to check if `item` exists in the array and don't need the index, then `arr.includes` is preferred.
 
 The method [arr.lastIndexOf](mdn:js/Array/lastIndexOf) is the same as `indexOf`, but looks for from right to left.
 
@@ -274,12 +274,12 @@ const arr = [NaN];
 alert( arr.indexOf(NaN) ); // -1 (wrong, should be 0)
 alert( arr.includes(NaN) );// true (correct)
 ```
-That's because `includes` was added to JavaScript much later and uses the more up to date comparison algorithm internally.
+That's because `includes` was added to JavaScript much later and uses the more up-to-date comparison algorithm internally.
 ````
 
 ### find and findIndex/findLastIndex
 
-Imagine we have an array of objects. How do we find an object with the specific condition?
+Imagine we have an array of objects. How do we find an object with a specific condition?
 
 Here the [arr.find(fn)](mdn:js/Array/find) method comes in handy.
 
@@ -297,7 +297,7 @@ The function is called for elements of the array, one after another:
 - `index` is its index.
 - `array` is the array itself.
 
-If it returns `true`, the search is stopped, the `item` is returned. If nothing found, `undefined` is returned.
+If it returns `true`, the search is stopped, the `item` is returned. If nothing is found, `undefined` is returned.
 
 For example, we have an array of users, each with the fields `id` and `name`. Let's find the one with `id == 1`:
 
@@ -313,11 +313,11 @@ let user = users.find(item => item.id == 1);
 alert(user.name); // John
 ```
 
-In real life arrays of objects is a common thing, so the `find` method is very useful.
+In real life, arrays of objects are a common thing, so the `find` method is very useful.
 
 Note that in the example we provide to `find` the function `item => item.id == 1` with one argument. That's typical, other arguments of this function are rarely used.
 
-The [arr.findIndex](mdn:js/Array/findIndex) method has the same syntax, but returns the index where the element was found instead of the element itself. The value of `-1` is returned if nothing is found.
+The [arr.findIndex](mdn:js/Array/findIndex) method has the same syntax but returns the index where the element was found instead of the element itself. The value of `-1` is returned if nothing is found.
 
 The [arr.findLastIndex](mdn:js/Array/findLastIndex) method is like `findIndex`, but searches from right to left, similar to `lastIndexOf`.
 
@@ -450,11 +450,11 @@ alert(arr);  // *!*1, 2, 15*/!*
 
 Now it works as intended.
 
-Let's step aside and think what's happening. The `arr` can be array of anything, right? It may contain numbers or strings or objects or whatever. We have a set of *some items*. To sort it, we need an *ordering function* that knows how to compare its elements. The default is a string order.
+Let's step aside and think about what's happening. The `arr` can be an array of anything, right? It may contain numbers or strings or objects or whatever. We have a set of *some items*. To sort it, we need an *ordering function* that knows how to compare its elements. The default is a string order.
 
 The `arr.sort(fn)` method implements a generic sorting algorithm. We don't need to care how it internally works (an optimized [quicksort](https://en.wikipedia.org/wiki/Quicksort) or [Timsort](https://en.wikipedia.org/wiki/Timsort) most of the time). It will walk the array, compare its elements using the provided function and reorder them, all we need is to provide the `fn` which does the comparison.
 
-By the way, if we ever want to know which elements are compared -- nothing prevents from alerting them:
+By the way, if we ever want to know which elements are compared -- nothing prevents us from alerting them:
 
 ```js run
 [1, -2, 15, 2, 0, 8].sort(function(a, b) {
@@ -526,7 +526,7 @@ Here's the situation from real life. We are writing a messaging app, and the per
 
 The [str.split(delim)](mdn:js/String/split) method does exactly that. It splits the string into an array by the given delimiter `delim`.
 
-In the example below, we split by a comma followed by space:
+In the example below, we split by a comma followed by a space:
 
 ```js run
 let names = 'Bilbo, Gandalf, Nazgul';
@@ -593,9 +593,9 @@ Arguments:
 - `index` -- is its position.
 - `array` -- is the array.
 
-As function is applied, the result of the previous function call is passed to the next one as the first argument.
+As the function is applied, the result of the previous function call is passed to the next one as the first argument.
 
-So, the first argument is essentially the accumulator that stores the combined result of all previous executions. And at the end it becomes the result of `reduce`.
+So, the first argument is essentially the accumulator that stores the combined result of all previous executions. And at the end, it becomes the result of `reduce`.
 
 Sounds complicated?
 
@@ -664,7 +664,7 @@ arr.reduce((sum, current) => sum + current);
 
 So it's advised to always specify the initial value.
 
-The method [arr.reduceRight](mdn:js/Array/reduceRight) does the same, but goes from right to left.
+The method [arr.reduceRight](mdn:js/Array/reduceRight) does the same but goes from right to left.
 
 ## Array.isArray
 
@@ -689,7 +689,7 @@ alert(Array.isArray([])); // true
 
 Almost all array methods that call functions -- like `find`, `filter`, `map`, with a notable exception of `sort`, accept an optional additional parameter `thisArg`.
 
-That parameter is not explained in the sections above, because it's rarely used. But for completeness we have to cover it.
+That parameter is not explained in the sections above, because it's rarely used. But for completeness, we have to cover it.
 
 Here's the full syntax of these methods:
 
@@ -749,7 +749,7 @@ A cheat sheet of array methods:
   - `concat(...items)` -- returns a new array: copies all members of the current one and adds `items` to it. If any of `items` is an array, then its elements are taken.
 
 - To search among elements:
-  - `indexOf/lastIndexOf(item, pos)` -- look for `item` starting from position `pos`, return the index or `-1` if not found.
+  - `indexOf/lastIndexOf(item, pos)` -- look for `item` starting from position `pos`, and return the index or `-1` if not found.
   - `includes(value)` -- returns `true` if the array has `value`, otherwise `false`.
   - `find/filter(func)` -- filter elements through the function, return first/all values that make it return `true`.
   - `findIndex` is like `find`, but returns the index instead of a value.
@@ -795,7 +795,7 @@ These methods are the most used ones, they cover 99% of use cases. But there are
 
 For the full list, see the [manual](mdn:js/Array).
 
-From the first sight it may seem that there are so many methods, quite difficult to remember. But actually that's much easier.
+At first sight, it may seem that there are so many methods, quite difficult to remember. But actually, that's much easier.
 
 Look through the cheat sheet just to be aware of them. Then solve the tasks of this chapter to practice, so that you have experience with array methods.
 

From bbac8a5d1fd9a7a1dba353f2530e030eb0276133 Mon Sep 17 00:00:00 2001
From: nakhodkin <14351638+nakhodkin@users.noreply.github.com>
Date: Wed, 3 Jan 2024 00:35:56 +0200
Subject: [PATCH 04/21] Fix grammar and JavaScript syntax

---
 .../10-destructuring-assignment/article.md    | 20 +++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/1-js/05-data-types/10-destructuring-assignment/article.md b/1-js/05-data-types/10-destructuring-assignment/article.md
index 41e36db2c..0a37fd938 100644
--- a/1-js/05-data-types/10-destructuring-assignment/article.md
+++ b/1-js/05-data-types/10-destructuring-assignment/article.md
@@ -5,7 +5,7 @@ The two most used data structures in JavaScript are `Object` and `Array`.
 - Objects allow us to create a single entity that stores data items by key.
 - Arrays allow us to gather data items into an ordered list.
 
-Although, when we pass those to a function, it may need not be an object/array as a whole. It may need individual pieces.
+However, when we pass those to a function, it may need not to be an object/array as a whole. It may need individual pieces.
 
 *Destructuring assignment* is a special syntax that allows us to "unpack" arrays or objects into a bunch of variables, as sometimes that's more convenient.
 
@@ -418,7 +418,7 @@ alert( title ); // Menu
 
 ## Nested destructuring
 
-If an object or an array contain other nested objects and arrays, we can use more complex left-side patterns to extract deeper portions.
+If an object or an array contains other nested objects and arrays, we can use more complex left-side patterns to extract deeper portions.
 
 In the code below `options` has another object in the property `size` and an array in the property `items`. The pattern on the left side of the assignment has the same structure to extract values from them:
 
@@ -449,7 +449,7 @@ alert(item1);  // Cake
 alert(item2);  // Donut
 ```
 
-All properties of `options` object except `extra` that is absent in the left part, are assigned to corresponding variables:
+All properties of `options` object except `extra` which is absent in the left part, are assigned to corresponding variables:
 
 ![](destructuring-complex.svg)
 
@@ -459,9 +459,9 @@ Note that there are no variables for `size` and `items`, as we take their conten
 
 ## Smart function parameters
 
-There are times when a function has many parameters, most of which are optional. That's especially true for user interfaces. Imagine a function that creates a menu. It may have a width, a height, a title, items list and so on.
+There are times when a function has many parameters, most of which are optional. That's especially true for user interfaces. Imagine a function that creates a menu. It may have a width, a height, a title, an item list and so on.
 
-Here's a bad way to write such function:
+Here's a bad way to write such a function:
 
 ```js
 function showMenu(title = "Untitled", width = 200, height = 100, items = []) {
@@ -469,7 +469,7 @@ function showMenu(title = "Untitled", width = 200, height = 100, items = []) {
 }
 ```
 
-In real-life, the problem is how to remember the order of arguments. Usually IDEs try to help us, especially if the code is well-documented, but still... Another problem is how to call a function when most parameters are ok by default.
+In real-life, the problem is how to remember the order of arguments. Usually, IDEs try to help us, especially if the code is well-documented, but still... Another problem is how to call a function when most parameters are ok by default.
 
 Like this?
 
@@ -534,7 +534,7 @@ function({
 })
 ```
 
-Then, for an object of parameters, there will be a variable `varName` for property `incomingProperty`, with `defaultValue` by default.
+Then, for an object of parameters, there will be a variable `varName` for the property `incomingProperty`, with `defaultValue` by default.
 
 Please note that such destructuring assumes that `showMenu()` does have an argument. If we want all values by default, then we should specify an empty object:
 
@@ -561,7 +561,7 @@ In the code above, the whole arguments object is `{}` by default, so there's alw
 - Destructuring assignment allows for instantly mapping an object or array onto many variables.
 - The full object syntax:
     ```js
-    let {prop : varName = default, ...rest} = object
+    let {prop : varName = defaultValue, ...rest} = object
     ```
 
     This means that property `prop` should go into the variable `varName` and, if no such property exists, then the `default` value should be used.
@@ -571,9 +571,9 @@ In the code above, the whole arguments object is `{}` by default, so there's alw
 - The full array syntax:
 
     ```js
-    let [item1 = default, item2, ...rest] = array
+    let [item1 = defaultValue, item2, ...rest] = array
     ```
 
-    The first item goes to `item1`; the second goes into `item2`, all the rest makes the array `rest`.
+    The first item goes to `item1`; the second goes into `item2`, and all the rest makes the array `rest`.
 
 - It's possible to extract data from nested arrays/objects, for that the left side must have the same structure as the right one.

From ea05aa90a39338bf7baeab96b6e078335f165617 Mon Sep 17 00:00:00 2001
From: Philip Gromov <43331414+Filin3@users.noreply.github.com>
Date: Mon, 1 Apr 2024 00:00:57 +0500
Subject: [PATCH 05/21] Updated result visualization

---
 1-js/04-object-basics/09-object-toprimitive/article.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/1-js/04-object-basics/09-object-toprimitive/article.md b/1-js/04-object-basics/09-object-toprimitive/article.md
index 0a16b5399..fa68da583 100644
--- a/1-js/04-object-basics/09-object-toprimitive/article.md
+++ b/1-js/04-object-basics/09-object-toprimitive/article.md
@@ -253,7 +253,7 @@ let obj = {
   }
 };
 
-alert(obj + 2); // 22 ("2" + 2), conversion to primitive returned a string => concatenation
+alert(obj + 2); // "22" ("2" + 2), conversion to primitive returned a string => concatenation
 ```
 
 ## Summary

From 85da6f1701cf870b689de1a1bd42fa0b4857c84f Mon Sep 17 00:00:00 2001
From: ellie-heidari <56841406+ellie-heidari@users.noreply.github.com>
Date: Fri, 10 May 2024 12:01:51 +0200
Subject: [PATCH 06/21] Update article.md

Small change in the sentence.
---
 1-js/05-data-types/06-iterable/article.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/1-js/05-data-types/06-iterable/article.md b/1-js/05-data-types/06-iterable/article.md
index 76f74036c..e2c0d4f97 100644
--- a/1-js/05-data-types/06-iterable/article.md
+++ b/1-js/05-data-types/06-iterable/article.md
@@ -174,7 +174,7 @@ When we use JavaScript for practical tasks in a browser or any other environment
 
 For instance, strings are both iterable (`for..of` works on them) and array-like (they have numeric indexes and `length`).
 
-But an iterable may be not array-like. And vice versa an array-like may be not iterable.
+But an iterable may not be array-like. And vice versa an array-like may not be iterable.
 
 For example, the `range` in the example above is iterable, but not array-like, because it does not have indexed properties and `length`.
 

From 475899e76726b120a3371ed26a44984ab655a138 Mon Sep 17 00:00:00 2001
From: "Stanislav (Stanley) Modrak"
 <44023416+smith558@users.noreply.github.com>
Date: Fri, 17 May 2024 14:56:19 +0100
Subject: [PATCH 07/21] Update article.md

---
 2-ui/99-ui-misc/03-event-loop/article.md | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/2-ui/99-ui-misc/03-event-loop/article.md b/2-ui/99-ui-misc/03-event-loop/article.md
index 3ea0c2c57..c0d39f958 100644
--- a/2-ui/99-ui-misc/03-event-loop/article.md
+++ b/2-ui/99-ui-misc/03-event-loop/article.md
@@ -17,7 +17,7 @@ The general algorithm of the engine:
     - execute them, starting with the oldest task.
 2. Sleep until a task appears, then go to 1.
 
-That's a formalization for what we see when browsing a page. The JavaScript engine does nothing most of the time, it only runs if a script/handler/event activates.
+That's a formalization of what we see when browsing a page. The JavaScript engine does nothing most of the time, it only runs if a script/handler/event activates.
 
 Examples of tasks:
 
@@ -30,19 +30,19 @@ Tasks are set -- the engine handles them -- then waits for more tasks (while sle
 
 It may happen that a task comes while the engine is busy, then it's enqueued.
 
-The tasks form a queue, so-called "macrotask queue" (v8 term):
+The tasks form a queue, the so-called "macrotask queue" (v8 term):
 
 ![](eventLoop.svg)
 
-For instance, while the engine is busy executing a `script`, a user may move their mouse causing `mousemove`, and `setTimeout` may be due and so on, these tasks form a queue, as illustrated on the picture above.
+For instance, while the engine is busy executing a `script`, a user may move their mouse causing `mousemove`, and `setTimeout` may be due and so on, these tasks form a queue, as illustrated in the picture above.
 
-Tasks from the queue are processed on "first come – first served" basis. When the engine browser is done with the `script`, it handles `mousemove` event, then `setTimeout` handler, and so on.
+Tasks from the queue are processed on a "first come – first served" basis. When the engine browser is done with the `script`, it handles `mousemove` event, then `setTimeout` handler, and so on.
 
 So far, quite simple, right?
 
 Two more details:
 1. Rendering never happens while the engine executes a task. It doesn't matter if the task takes a long time. Changes to the DOM are painted only after the task is complete.
-2. If a task takes too long, the browser can't do other tasks, such as processing user events. So after a time, it raises an alert like "Page Unresponsive", suggesting killing the task with the whole page. That happens when there are a lot of complex calculations or a programming error leading to an infinite loop.
+2. If a task takes too long, the browser can't do other tasks, such as processing user events. So after some time, it raises an alert like "Page Unresponsive", suggesting killing the task with the whole page. That happens when there are a lot of complex calculations or a programming error leading to an infinite loop.
 
 That was the theory. Now let's see how we can apply that knowledge.
 
@@ -54,7 +54,7 @@ For example, syntax-highlighting (used to colorize code examples on this page) i
 
 While the engine is busy with syntax highlighting, it can't do other DOM-related stuff, process user events, etc. It may even cause the browser to "hiccup" or even "hang" for a bit, which is unacceptable.
 
-We can avoid problems by splitting the big task into pieces. Highlight first 100 lines, then schedule `setTimeout` (with zero-delay) for the next 100 lines, and so on.
+We can avoid problems by splitting the big task into pieces. Highlight the first 100 lines, then schedule `setTimeout` (with zero-delay) for the next 100 lines, and so on.
 
 To demonstrate this approach, for the sake of simplicity, instead of text-highlighting, let's take a function that counts from `1` to `1000000000`.
 

From 7e524bac0bedac9a08bbf2ef3d3efa0b701c14e6 Mon Sep 17 00:00:00 2001
From: "Stanislav (Stanley) Modrak"
 <44023416+smith558@users.noreply.github.com>
Date: Fri, 17 May 2024 15:10:51 +0100
Subject: [PATCH 08/21] Add link

---
 2-ui/99-ui-misc/03-event-loop/article.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/2-ui/99-ui-misc/03-event-loop/article.md b/2-ui/99-ui-misc/03-event-loop/article.md
index c0d39f958..f33188491 100644
--- a/2-ui/99-ui-misc/03-event-loop/article.md
+++ b/2-ui/99-ui-misc/03-event-loop/article.md
@@ -30,7 +30,7 @@ Tasks are set -- the engine handles them -- then waits for more tasks (while sle
 
 It may happen that a task comes while the engine is busy, then it's enqueued.
 
-The tasks form a queue, the so-called "macrotask queue" (v8 term):
+The tasks form a queue, the so-called "macrotask queue" ([v8](https://v8.dev/) term):
 
 ![](eventLoop.svg)
 

From 42851f41d31eff62adcb38da6fbcc44600871840 Mon Sep 17 00:00:00 2001
From: Prasenna Venkatesh Vepambedu <prasennavenkatesh@gmail.com>
Date: Sat, 18 May 2024 04:26:03 -0400
Subject: [PATCH 09/21] Update task.md

---
 .../04-object-methods/8-chain-calls/task.md               | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/1-js/04-object-basics/04-object-methods/8-chain-calls/task.md b/1-js/04-object-basics/04-object-methods/8-chain-calls/task.md
index a2a19c620..7d2ef8c15 100644
--- a/1-js/04-object-basics/04-object-methods/8-chain-calls/task.md
+++ b/1-js/04-object-basics/04-object-methods/8-chain-calls/task.md
@@ -4,7 +4,7 @@ importance: 2
 
 # Chaining
 
-There's a `ladder` object that allows to go up and down:
+There's a `ladder` object that allows you to go up and down:
 
 ```js
 let ladder = {
@@ -21,7 +21,7 @@ let ladder = {
 };
 ```
 
-Now, if we need to make several calls in sequence, can do it like this:
+Now, if we need to make several calls in sequence, we can do it like this:
 
 ```js
 ladder.up();
@@ -32,10 +32,10 @@ ladder.down();
 ladder.showStep(); // 0
 ```
 
-Modify the code of `up`, `down` and `showStep` to make the calls chainable, like this:
+Modify the code of `up`, `down`, and `showStep` to make the calls chainable, like this:
 
 ```js
 ladder.up().up().down().showStep().down().showStep(); // shows 1 then 0
 ```
 
-Such approach is widely used across JavaScript libraries.
+Such an approach is widely used across JavaScript libraries.

From f684d39c7339fdea52ac9159b8e0ec0e0f20c5b2 Mon Sep 17 00:00:00 2001
From: sneeed <55649412+sneeed@users.noreply.github.com>
Date: Sat, 8 Jun 2024 14:52:05 +0200
Subject: [PATCH 10/21] change example element of multidimensional array

When teaching this subject I found that an example where you can see for which array the first and the second value in the [] after matrix stand, helps understanding better.
---
 1-js/05-data-types/04-array/article.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/1-js/05-data-types/04-array/article.md b/1-js/05-data-types/04-array/article.md
index ee2e3d713..e71e86a5b 100644
--- a/1-js/05-data-types/04-array/article.md
+++ b/1-js/05-data-types/04-array/article.md
@@ -426,7 +426,7 @@ let matrix = [
   [7, 8, 9]
 ];
 
-alert( matrix[1][1] ); // 5, the central element
+alert( matrix[0][1] ); // 2, the second value of the first inner array
 ```
 
 ## toString

From c151e118ce74d921e1defd398018b4499e614fe8 Mon Sep 17 00:00:00 2001
From: Ilya Kantor <iliakan@users.noreply.github.com>
Date: Thu, 13 Jun 2024 21:14:46 +0200
Subject: [PATCH 11/21] minor fixes

---
 .github/FUNDING.yml | 1 +
 BACKERS.md          | 6 ++++++
 2 files changed, 7 insertions(+)
 create mode 100644 .github/FUNDING.yml
 create mode 100644 BACKERS.md

diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 000000000..490051876
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1 @@
+github: iliakan
diff --git a/BACKERS.md b/BACKERS.md
new file mode 100644
index 000000000..36b1532bc
--- /dev/null
+++ b/BACKERS.md
@@ -0,0 +1,6 @@
+
+# Sponsors and Supporters
+
+## Supporters
+
+- Ilya Zelenko

From 3fd3f9871e0aacf6ecc76956cb729973c6dcf0e2 Mon Sep 17 00:00:00 2001
From: Aleksandras <alex30955@aol.com>
Date: Sun, 23 Jun 2024 21:40:20 +0300
Subject: [PATCH 12/21] - `run`

---
 1-js/11-async/02-promise-basics/article.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/1-js/11-async/02-promise-basics/article.md b/1-js/11-async/02-promise-basics/article.md
index 207fb2c8c..b15643f0a 100644
--- a/1-js/11-async/02-promise-basics/article.md
+++ b/1-js/11-async/02-promise-basics/article.md
@@ -46,7 +46,7 @@ Later we'll see how "fans" can subscribe to these changes.
 
 Here's an example of a promise constructor and a simple executor function with  "producing code" that takes time (via `setTimeout`):
 
-```js run
+```js
 let promise = new Promise(function(resolve, reject) {
   // the function is executed automatically when the promise is constructed
 

From d1ffe5d7a1fd342d0090aeeded85556cf0ada948 Mon Sep 17 00:00:00 2001
From: kricsleo <32707098+kricsleo@users.noreply.github.com>
Date: Fri, 5 Jul 2024 10:27:16 +0800
Subject: [PATCH 13/21] docs: remove eval polyfill.io

---
 1-js/03-code-quality/06-polyfills/article.md | 1 -
 1 file changed, 1 deletion(-)

diff --git a/1-js/03-code-quality/06-polyfills/article.md b/1-js/03-code-quality/06-polyfills/article.md
index f7064d093..19404b7b5 100644
--- a/1-js/03-code-quality/06-polyfills/article.md
+++ b/1-js/03-code-quality/06-polyfills/article.md
@@ -73,7 +73,6 @@ JavaScript is a highly dynamic language. Scripts may add/modify any function, ev
 
 Two interesting polyfill libraries are:
 - [core js](https://github.com/zloirock/core-js) that supports a lot, allows to include only needed features.
-- [polyfill.io](https://polyfill.io/) service that provides a script with polyfills, depending on the features and user's browser.
 
 
 ## Summary

From d6e0376a8ce53bcc3b7b69d626a536280a799a6a Mon Sep 17 00:00:00 2001
From: FloffyGarlic <155742846+FloffyGarlic@users.noreply.github.com>
Date: Tue, 9 Jul 2024 17:37:19 +0200
Subject: [PATCH 14/21] Remove BigInt IE incompatibility part (#3709)

* Remove BigInt IE incompatibility part

As Internet Explorer was retired years ago, this paragraph is not needed anymore, so I deleted that line.

* Delete link to MDN BigInt compatibility table

Unimportant link: almost total compatibility since the appearance of zhe `BigInt` type.
---
 1-js/02-first-steps/05-types/article.md | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/1-js/02-first-steps/05-types/article.md b/1-js/02-first-steps/05-types/article.md
index 26f3bcd53..04e8b2450 100644
--- a/1-js/02-first-steps/05-types/article.md
+++ b/1-js/02-first-steps/05-types/article.md
@@ -94,13 +94,6 @@ const bigInt = 1234567890123456789012345678901234567890n;
 
 As `BigInt` numbers are rarely needed, we don't cover them here, but devoted them a separate chapter <info:bigint>. Read it when you need such big numbers.
 
-
-```smart header="Compatibility issues"
-Right now, `BigInt` is supported in Firefox/Chrome/Edge/Safari, but not in IE.
-```
-
-You can check [*MDN* BigInt compatibility table](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt#Browser_compatibility) to know which versions of a browser are supported.
-
 ## String
 
 A string in JavaScript must be surrounded by quotes.

From 5a0df77a9a45b81b86324d3b5573a9b3c7eab5d9 Mon Sep 17 00:00:00 2001
From: shallow-beach <96891913+shallow-beach@users.noreply.github.com>
Date: Wed, 10 Jul 2024 01:43:17 -0700
Subject: [PATCH 15/21] Update article.md

detail `Math.round` behavior on negative numbers in middle case.
---
 1-js/05-data-types/02-number/article.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/1-js/05-data-types/02-number/article.md b/1-js/05-data-types/02-number/article.md
index a96e4e688..96a7b622a 100644
--- a/1-js/05-data-types/02-number/article.md
+++ b/1-js/05-data-types/02-number/article.md
@@ -137,7 +137,7 @@ There are several built-in functions for rounding:
 : Rounds up: `3.1` becomes `4`, and `-1.1` becomes `-1`.
 
 `Math.round`
-: Rounds to the nearest integer: `3.1` becomes `3`, `3.6` becomes `4`, the middle case: `3.5` rounds up to `4` too.
+: Rounds to the nearest integer: `3.1` becomes `3`, `3.6` becomes `4`. In the middle cases `3.5` rounds up to `4`, and `-3.5` rounds up to `-3`.
 
 `Math.trunc` (not supported by Internet Explorer)
 : Removes anything after the decimal point without rounding: `3.1` becomes `3`, `-1.1` becomes `-1`.
@@ -147,8 +147,10 @@ Here's the table to summarize the differences between them:
 |   | `Math.floor` | `Math.ceil` | `Math.round` | `Math.trunc` |
 |---|---------|--------|---------|---------|
 |`3.1`|  `3`    |   `4`  |    `3`  |   `3`   |
+|`3.5`|  `3`    |   `4`  |    `4`  |   `3`   |
 |`3.6`|  `3`    |   `4`  |    `4`  |   `3`   |
 |`-1.1`|  `-2`    |   `-1`  |    `-1`  |   `-1`   |
+|`-1.5`|  `-2`    |   `-1`  |    `-1`  |   `-1`   |
 |`-1.6`|  `-2`    |   `-1`  |    `-2`  |   `-1`   |
 
 

From 6f08958b99c6e63417d5c480fc5f0384c502b79d Mon Sep 17 00:00:00 2001
From: tonybishnoi <53338071+tonybishnoi@users.noreply.github.com>
Date: Thu, 10 Oct 2024 01:55:56 +0530
Subject: [PATCH 16/21] minor fix to function name written in explanation

The code uses the function named 'askPassword' but the text above it explaining the error reason says 'ask' instead of 'askPassword'
---
 .../10-bind/5-question-use-bind/solution.md                     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/1-js/06-advanced-functions/10-bind/5-question-use-bind/solution.md b/1-js/06-advanced-functions/10-bind/5-question-use-bind/solution.md
index 403107ca6..4a381c0b4 100644
--- a/1-js/06-advanced-functions/10-bind/5-question-use-bind/solution.md
+++ b/1-js/06-advanced-functions/10-bind/5-question-use-bind/solution.md
@@ -1,5 +1,5 @@
 
-The error occurs because `ask` gets functions `loginOk/loginFail` without the object.
+The error occurs because `askPassword` gets functions `loginOk/loginFail` without the object.
 
 When it calls them, they naturally assume `this=undefined`.
 

From eedc262cea1ba991c067e4bc794592121b5aa9e2 Mon Sep 17 00:00:00 2001
From: Nick Roma <54879724+nikoandpiko@users.noreply.github.com>
Date: Wed, 23 Oct 2024 00:45:18 +0900
Subject: [PATCH 17/21] Grammatical fix

---
 1-js/03-code-quality/06-polyfills/article.md | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/1-js/03-code-quality/06-polyfills/article.md b/1-js/03-code-quality/06-polyfills/article.md
index 19404b7b5..b6ea60820 100644
--- a/1-js/03-code-quality/06-polyfills/article.md
+++ b/1-js/03-code-quality/06-polyfills/article.md
@@ -71,9 +71,7 @@ if (!Math.trunc) { // if no such function
 
 JavaScript is a highly dynamic language. Scripts may add/modify any function, even built-in ones.
 
-Two interesting polyfill libraries are:
-- [core js](https://github.com/zloirock/core-js) that supports a lot, allows to include only needed features.
-
+One interesting polyfill library is [core-js](https://github.com/zloirock/core-js), which supports a wide range of features and allows you to include only the specific ones you need.
 
 ## Summary
 

From 67833c9ccf241d5d7bbe4f678da1f6541cf163c1 Mon Sep 17 00:00:00 2001
From: zakingslayerv22 <11926638+zakingslayerv22@users.noreply.github.com>
Date: Wed, 11 Dec 2024 02:05:05 -0800
Subject: [PATCH 18/21] Update article.md

Suggested edit - to make the phrase clearer.
---
 1-js/11-async/02-promise-basics/article.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/1-js/11-async/02-promise-basics/article.md b/1-js/11-async/02-promise-basics/article.md
index b15643f0a..66d9538fc 100644
--- a/1-js/11-async/02-promise-basics/article.md
+++ b/1-js/11-async/02-promise-basics/article.md
@@ -222,7 +222,7 @@ The idea of `finally` is to set up a handler for performing cleanup/finalizing a
 
 E.g. stopping loading indicators, closing no longer needed connections, etc.
 
-Think of it as a party finisher. No matter was a party good or bad, how many friends were in it, we still need (or at least should) do a cleanup after it.
+Think of it as a party finisher. Irresepective of whether a party was good or bad, how many friends were in it, we still need (or at least should) do a cleanup after it.
 
 The code may look like this:
 

From b36823a929a10675eebc2f62d2a680a1cbcc8d63 Mon Sep 17 00:00:00 2001
From: pj-szdm <50366990+pj-szdm@users.noreply.github.com>
Date: Wed, 18 Dec 2024 10:34:02 +0100
Subject: [PATCH 19/21] better wording

---
 1-js/05-data-types/02-number/article.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/1-js/05-data-types/02-number/article.md b/1-js/05-data-types/02-number/article.md
index 96a7b622a..8e41f673d 100644
--- a/1-js/05-data-types/02-number/article.md
+++ b/1-js/05-data-types/02-number/article.md
@@ -118,7 +118,7 @@ Common use cases for this are:
 ```warn header="Two dots to call a method"
 Please note that two dots in `123456..toString(36)` is not a typo. If we want to call a method directly on a number, like `toString` in the example above, then we need to place two dots `..` after it.
 
-If we placed a single dot: `123456.toString(36)`, then there would be an error, because JavaScript syntax implies the decimal part after the first dot. And if we place one more dot, then JavaScript knows that the decimal part is empty and now goes the method.
+If we placed a single dot: `123456.toString(36)`, then there would be an error, because JavaScript syntax implies the decimal part after the first dot. And if we place one more dot, then JavaScript knows that the decimal part is empty and now uses the method.
 
 Also could write `(123456).toString(36)`.
 

From dc1437872bc789e3ad3ba6a36bf3a845a0f43041 Mon Sep 17 00:00:00 2001
From: mhi1627 <168352351+mhi1627@users.noreply.github.com>
Date: Wed, 22 Jan 2025 16:37:56 +0530
Subject: [PATCH 20/21] Update article.md

the comment number is missing when the we mention line 2
---
 1-js/02-first-steps/16-function-expressions/article.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/1-js/02-first-steps/16-function-expressions/article.md b/1-js/02-first-steps/16-function-expressions/article.md
index b952d5943..c6dd891bd 100644
--- a/1-js/02-first-steps/16-function-expressions/article.md
+++ b/1-js/02-first-steps/16-function-expressions/article.md
@@ -82,7 +82,7 @@ let sayHi = function() { // (1) create
   alert( "Hello" );
 };
 
-let func = sayHi;
+let func = sayHi;  //(2)
 // ...
 ```
 

From 8b2a2f2c1c6d888f811cb0a2aa7b47eb2797b2d6 Mon Sep 17 00:00:00 2001
From: Aditya Girdhar <92713380+AdityaGirdhar@users.noreply.github.com>
Date: Thu, 30 Jan 2025 20:39:38 +0530
Subject: [PATCH 21/21] Improve readability

---
 1-js/03-code-quality/06-polyfills/article.md | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/1-js/03-code-quality/06-polyfills/article.md b/1-js/03-code-quality/06-polyfills/article.md
index 19404b7b5..aa849d407 100644
--- a/1-js/03-code-quality/06-polyfills/article.md
+++ b/1-js/03-code-quality/06-polyfills/article.md
@@ -71,8 +71,7 @@ if (!Math.trunc) { // if no such function
 
 JavaScript is a highly dynamic language. Scripts may add/modify any function, even built-in ones.
 
-Two interesting polyfill libraries are:
-- [core js](https://github.com/zloirock/core-js) that supports a lot, allows to include only needed features.
+An interesting polyfill library is [core js](https://github.com/zloirock/core-js) that supports a lot and allows to include only needed features.
 
 
 ## Summary

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<html xmlns='http://www.w3.org/1999/xhtml'>
<head>
<title>pFad - Phonifier reborn</title>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8' />
</head>
<body>
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