str为要去除空格的字符串:
去除所有空格: str = str.replace(/\s+/g,"");
去除两头空格: str = str.replace(/^\s+|\s+$/g,"");
去除左空格：str=str.replace( /^\s*/, '');
去除右空格：str=str.replace(/(\s*$)/g, "");
//出处:网上搜集
// Trim(),Ltrim(),RTrim()
String.prototype.Trim = function()
{
returnthis.replace(/(^\s*)|(\s*$)/g,"");
}
String.prototype.LTrim = function()
{
returnthis.replace(/(^\s*)/g,"");
}
String.prototype.RTrim = function()
{
returnthis.replace(/(\s*$)/g,"");
}
//-->
