JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.angularjs.org/1.2.9/angular.min.js"></script>
<button onclick="test()">test</button>

JavaScript

function test() {
    var start = Date.now();
    setTimeout(function() {
        var now = Date.now();
        console.log(now - start);
    }, 0);
}