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| 1 | String.prototype.trim = function() { | |
| 2 | var str = this, | |
| 3 | whitespace = ' \n\r\t\f\x0b\xa0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000'; | |
| 4 | for (var i = 0,len = str.length; i < len; i++) { | |
| 5 | if (whitespace.indexOf(str.charAt(i)) === -1) { | |
| 6 | str = str.substring(i); | |
| 7 | break; | |
| 8 | } | |
| 9 | } | |
| 10 | for (i = str.length - 1; i >= 0; i--) { | |
| 11 | if (whitespace.indexOf(str.charAt(i)) === -1) { | |
| 12 | str = str.substring(0, i + 1); | |
| 13 | break; | |
| 14 | } | |
| 15 | } | |
| 16 | return whitespace.indexOf(str.charAt(0)) === -1 ? str : ''; | |
| 17 | } |
