JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">
<ul id='myUL'></ul>

JavaScript

var y = [1, 2, 3]
var removeItem = 2;

y.splice( $.inArray(removeItem,y) ,1 );

alert(y);