JavaScript字符串去除空格

/*字符串去除空格*/
String.prototype.Trim = function() {
    return this.replace(/(^\s*)|(\s*$)/g, "");
}
String.prototype.LeftTrim = function() {
    return this.replace(/(^\s*)/g, "");
}
String.prototype.RightTrim = function() {
    return this.replace(/(\s*$)/g, "");
}