What is the best way to trim() in javascript

Question

The question says it all; JS doesn\'t seem to have a native trim() method.

Answer 1

Why not just modify the String prototype? Why not steal the trim function from an open source library, like I did here with YUI? (Do you really need to load and entire framework for this simple taks?) Put them together and you get this:

String.prototype.trim = function() {
    try {
        return this.replace(/^\s+|\s+$/g, "");
    } catch(e) {
        return this;
    }
}

var s = " hello ";
alert(s.trim() == "hello"); // displays true