# Mutation Observers polyfill Mutation Observers provide a way to react to changes in the DOM. This is needed on IE versions 9 and 10, see . ## More information * [API documentation](http://api.dartlang.org/docs/bleeding_edge/dart_html/MutationObserver.html) * [Mozilla Developer Network page](https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver) * [Specification](https://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#mutation-observers) ## Getting started Include the polyfill in your HTML ``: ```html ``` You can also use a minified version for deployment: ```html ``` ## Getting the source code The source for this package is at: The original source of the JavaScript code is at: ## Building The minified version is produced with: ```bash uglifyjs mutation_observer.js -o mutation_observer.min.js ``` See for usage of UglifyJS.