JS Trim() 去空格

//出处:网上搜集
//made by yaosansi 2005-12-02
//For more visit http://www.yaosansi.com
// 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, "");
}