javascript clean object properties

javascript clean object.txt

    /**
     * Clear all the elements of an array/object without changing the reference, this must be used in objects binded
     * instead of:
     *      obj = {}
     * This assignments change the reference of the object (pointer) because they create a new object, with this method this can be avoided.
     */
    $this.clearObject = function(obj){
        var keys = Object.keys(obj);
        for (var i = 0; i < keys.length; i++) {
            delete obj[keys[i]];
        }
    }