Mentions autocomplete like At.js with zero dependency and easy usage if you just want something like sina weibo @ mentions
<link rel="stylesheet" type="text/css" href="at.css">
<script type="text/javascript" src="at.js"></script>
Open index.html and you will see how it works.
{
fetchList:function(cb){ cb([]) }, // get autocomplete suggestions list with callback
onAtChange:function(atData) {}, // get all @ data in list when changed.
seperator:' ', // seperator between @ items
at:'@', // @ symbol
getText:function(data) { return data.text } // the text show after @. If null will show list data itself
}