测试去空格

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<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/><meta http-equiv="X-UA-Compatible" content="IE=edge"><title>测试去空格</title><script type="text/javascript" src="http://bj.xdf.cn/Portals/24/xdf_common/js/jquery-1.4.2.min.js"></script><style type="text/css"></style></head><body><script>String.prototype.trim = function() {  return this.replace(/^\s\s*/, '').replace(/\s\s*$/, '');};$(function(){var a = '  ',b = '  b',c = 'c  ',d = '  d  ',e;console.log(a);console.log(b);console.log(c);console.log(d);console.log(e);console.log(a.trim());console.log(b.trim());console.log(c.trim());console.log(d.trim());console.log(e ? e.trim() : '');console.log(a.length);console.log(b.length);console.log(c.length);console.log(d.length);console.log(a.trim().length);console.log(b.trim().length);console.log(c.trim().length);console.log(d.trim().length);});</script></body></html>

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