javascript - Element.prototype in IE7?

Question

I'm trying to extend all dom elements so i can get and remove their children. The function is below (works in FF and Chrome). Is there an equivalent in IE7 to extend the base dom object?

if (!Element.get) {
Element.prototype.get = function(id) {
    for (var i = 0; i < this.childNodes.length; i++) {
        if (this.childNodes[i].id == id) {
            return this.childNodes[i];
        }
        if (this.childNodes[i].childNodes.length) {
            var ret = this.childNodes[i].get(id);
            if (ret != null) {
                return ret;
            }
        }
    }
    return null;
}
}

Element.prototype.removeChildren = function() {
    removeChildren(this);
}

Thanks!

Answer 1

Here is a simple workaround that will be sufficient in 99% of cases. It may as well be completed as required by your script :

if ( !window.Element ) 
{
    Element = function(){};

    var __createElement = document.createElement;
    document.createElement = function(tagName)
    {
        var element = __createElement(tagName);
        if (element == null) {return null;}
        for(var key in Element.prototype)
                element[key] = Element.prototype[key];
        return element;
    }

    var __getElementById = document.getElementById;
    document.getElementById = function(id)
    {
        var element = __getElementById(id);
        if (element == null) {return null;}
        for(var key in Element.prototype)
                element[key] = Element.prototype[key];
        return element;
    }
}