Add examples

tshemsedinov · tshemsedinov · commit 9b9a8601422c · 2025-06-27T03:39:34.000+03:00
diff --git a/JavaScript/1-datetime.js b/JavaScript/1-datetime.js
@@ -0,0 +1,24 @@
+'use strict';
+
+// Requires node.js 18
+
+const DATE_TIME_FORMAT = {
+  year: 'numeric',
+  month: '2-digit',
+  day: '2-digit',
+  hour: '2-digit',
+  minute: '2-digit',
+  second: '2-digit',
+  timeZoneName: 'longOffset',
+};
+
+// Sweden
+const formatter = new Intl.DateTimeFormat('sv-SE', DATE_TIME_FORMAT);
+
+const date = new Date();
+const parts = formatter.formatToParts(date);
+console.log(parts);
+
+const s = parts.map(({ value }) => value).join('');
+console.log(s);
+// Output: 2025-06-27 02:00:54 GMT+03:00
diff --git a/JavaScript/2-iso.js b/JavaScript/2-iso.js
@@ -0,0 +1,33 @@
+'use strict';
+
+// Requires node.js 18
+
+const DATE_TIME_FORMAT = {
+  year: 'numeric',
+  month: '2-digit',
+  day: '2-digit',
+  hour: '2-digit',
+  minute: '2-digit',
+  second: '2-digit',
+  timeZoneName: 'longOffset',
+};
+
+const formatter = new Intl.DateTimeFormat('en-GB', DATE_TIME_FORMAT);
+
+const getLocalIsoString = () => {
+  const now = new Date();
+  const parts = formatter
+    .formatToParts(now)
+    .filter(({ type }) => type !== 'literal')
+    .map(({ type, value }) => [type, value]);
+  const date = Object.fromEntries(parts);
+  const { year, month, day, hour, minute, second } = date;
+  console.log(date);
+  const zone = date.timeZoneName.slice(3);
+  return `${year}-${month}-${day}T${hour}:${minute}:${second}${zone}`;
+};
+
+// Usage
+
+console.log(getLocalIsoString());
+// Output: 2025-06-27T02:00:54+03:00
