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    <p>Several years later, there is now officially a better solution. <a href="https://dom.spec.whatwg.org/#interface-mutationobserver" rel="noreferrer">DOM4 Mutation Observers</a> are the replacement for deprecated DOM3 mutation events. They are <a href="http://caniuse.com/#feat=mutationobserver" rel="noreferrer">currently implemented in modern browsers</a> as <code>MutationObserver</code> (or as the vendor-prefixed <code>WebKitMutationObserver</code> in old versions of Chrome):</p> <pre><code>MutationObserver = window.MutationObserver || window.WebKitMutationObserver; var observer = new MutationObserver(function(mutations, observer) { // fired when a mutation occurs console.log(mutations, observer); // ... }); // define what element should be observed by the observer // and what types of mutations trigger the callback observer.observe(document, { subtree: true, attributes: true //... }); </code></pre> <p>This example listens for DOM changes on <code>document</code> and its entire subtree, and it will fire on changes to element attributes as well as structural changes. The draft spec has a full list of valid <a href="https://dom.spec.whatwg.org/#interface-mutationobserver" rel="noreferrer">mutation listener properties</a>:</p> <blockquote> <p><strong>childList</strong></p> <ul> <li>Set to <code>true</code> if mutations to target's children are to be observed.</li> </ul> <p><strong>attributes</strong></p> <ul> <li>Set to <code>true</code> if mutations to target's attributes are to be observed.</li> </ul> <p><strong>characterData</strong></p> <ul> <li>Set to <code>true</code> if mutations to target's data are to be observed.</li> </ul> <p><strong>subtree</strong></p> <ul> <li>Set to <code>true</code> if mutations to not just target, but also target's descendants are to be observed.</li> </ul> <p><strong>attributeOldValue</strong></p> <ul> <li>Set to <code>true</code> if <code>attributes</code> is set to true and target's attribute value before the mutation needs to be recorded.</li> </ul> <p><strong>characterDataOldValue</strong></p> <ul> <li>Set to <code>true</code> if <code>characterData</code> is set to true and target's data before the mutation needs to be recorded.</li> </ul> <p><strong>attributeFilter</strong></p> <ul> <li>Set to a list of attribute local names (without namespace) if not all attribute mutations need to be observed.</li> </ul> </blockquote> <p>(This list is current as of April 2014; you may check the specification for any changes.)</p>
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    1. COThis doesn't work on FF and IE, check this sample: http://jsfiddle.net/Lcybj/
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    2. CO@AshrafBashir I see the sample working fine in Firefox 19.0.2: I see `([{}])` logged to the console, which shows the expected `MutationRecord` when I click on it. Please check again, as it might have been a temporary technical failure in JSFiddle. I have not tested it in IE yet, since i don't have IE 10, which is currently the only version to support mutation events.
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