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- String.prototype.trim = function() {
- var str = this,
- whitespace = ' \n\r\t\f\x0b\xa0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000';
- for (var i = 0,len = str.length; i < len; i++) {
- if (whitespace.indexOf(str.charAt(i)) === -1) {
- str = str.substring(i);
- break;
- }
- }
- for (i = str.length - 1; i >= 0; i--) {
- if (whitespace.indexOf(str.charAt(i)) === -1) {
- str = str.substring(0, i + 1);
- break;
- }
- }
- return whitespace.indexOf(str.charAt(0)) === -1 ? str : '';
- }
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