JavaScript去除空格的三种方法 (trim)

<SCRIPT LANGUAGE="JavaScript">
<!--
// 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, "");
}
 
//-->
</SCRIPT>