diff --git a/src/core.js b/src/core.js
index ccb8d4cbe..b7b8f3b9b 100644
--- a/src/core.js
+++ b/src/core.js
@@ -198,18 +198,25 @@ $.extend( $.fn, {
}
} );
+// JQuery trim is deprecated, provide a trim method based on String.prototype.trim
+var trim = function( str ) {
+
+ // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/trim#Polyfill
+ return str.replace( /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, "" );
+};
+
// Custom selectors
$.extend( $.expr.pseudos || $.expr[ ":" ], { // '|| $.expr[ ":" ]' here enables backwards compatibility to jQuery 1.7. Can be removed when dropping jQ 1.7.x support
// https://jqueryvalidation.org/blank-selector/
blank: function( a ) {
- return !$.trim( "" + $( a ).val() );
+ return !trim( "" + $( a ).val() );
},
// https://jqueryvalidation.org/filled-selector/
filled: function( a ) {
var val = $( a ).val();
- return val !== null && !!$.trim( "" + val );
+ return val !== null && !!trim( "" + val );
},
// https://jqueryvalidation.org/unchecked-selector/
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