обертка элементов

js обертка элементов

// ready (MutationObserver)
(function(win) {
    'use strict';
    var listeners = [],
    doc = win.document,
    MutationObserver = win.MutationObserver || win.WebKitMutationObserver,
    observer;
    function ready(selector, fn) {
        listeners.push({
            selector: selector,
            fn: fn
        });
        if (!observer) {
            observer = new MutationObserver(check);
            observer.observe(doc.documentElement, {
                childList: true,
                subtree: true
            });
        }
        check();
    }
    function check() {
        for (var i = 0, len = listeners.length, listener, elements; i < len; i++) {
            listener = listeners[i];
            elements = doc.querySelectorAll(listener.selector);
            for (var j = 0, jLen = elements.length, element; j < jLen; j++) {
                element = elements[j];
                if (!element.ready) {
                    element.ready = true;
                    listener.fn.call(element, element);
                }
            }
        }
    }
    win.ready = ready;
})(this);
// wrapFunc
var wrapFunc = function (param_1, param_2) {
    ready(param_1, function(element) {
        var wrapper = document.createElement('div');
        this.parentNode.insertBefore(wrapper, this);
        wrapper.appendChild(this);
        wrapper.classList.add(param_2);
    });
};