There ‘s many way to do this but most simple one is just use live.js.
You just need include live.js into you web page.
to be aware! you need load you page in web server enviroment and it needs to be front of every js you‘d have in your web pages.
feel free to copy that <script type="text/javascript" src="http://livejs.com/live.js"></script>
how to auto refresh your web page in browser?
原文：http://www.cnblogs.com/vitalitycn/p/5730185.html