resizeelement cutsom jQuery event

resizeelement

(function (root, $) {
    "use strict";
    $.event.special.resizeelement = {
        setup: function () {
            var $this,
                interval,
                width,
                height;
            $this = $(this);
            width = $this.width();
            height = $this.height();
            interval = root.setInterval(function () {
                var w,
                    h;
                w = $this.width();
                h = $this.height();
                if (w != width || h != height) {
                    $this.trigger('resizeelement');
                    width = w;
                    height = h;
                }
            }, 15);
            $this.data('resizeelement', interval);
        },
        teardown: function () {
            var interval,
                data;
            data = $(this).data();
            interval = data.resizeelement;
            root.clearInterval(interval);
            delete data.resizeelement;
        }
    };
}(this, this.jQuery));