>> str为要去除空格的字符串:
1:去除所有空格:
str = str.replace(/\s+/g,"");
2:去除两头空格:
str = str.replace(/^\s+|\s+$/g,"");
3:去除左空格:
str=str.replace( /^\s*/, '');
4:去除右空格:
str=str.replace(/(\s*$)/g, "");
5: 在代码中,为String对象添加去除空格的方法
<script language="JavaScript"> //出处:网上搜集 // Trim() , Ltrim() , RTrim() String.prototype.Trim = function() { return this.replace(/(^\s*)|(\s*$)/g, ""); } String.prototype.LTrim = function() { return this.replace(/(^\s*)/g, ""); } String.prototype.RTrim = function() { return this.replace(/(\s*$)/g, ""); } String.prototype.LRTrim = function(){ return this.replace(/^\s+|\s+$/g,""); } </script>