jquery-observe.js

$.fn.observe = function(callback, options) {
    options = options || {
        attributes: true, 
        childList: true, 
        characterData: true
    };

    $(this).each(function() {
        var observer = new MutationObserver(callback.bind(this));
        observer.observe(this, options);
    });

    return this;
};

jQuery observe

A jQuery extension to quickly apply a mutation observer to jQuery objects. The first argument is a callback function, within which this refers to the current element; also gets the MutationRecord passed as well as the MutationObserver (just as you'd expect). The second argument optionally takes an options object with the usual MutationObserverInit API.

Sample usage:

$('body').observe(function(mutations, observer) {
    console.log('Change observed');
    observer.disconnect();
}).append('<div/>');