JSFiddle - React, Tailwind, and code Playground
HTML
<link rel="stylesheet" href="http://dev.sencha.com/deploy/ext-4.0.2a/resources/css/ext-all.css">
<form>
<input type="button" value="Click me!" onclick="javascript:displaymessage()" />
</form>
<p>By pressing the button above, a function will be called. The function will alert a message.</p>JavaScript
function displaymessage()
{
alert("Hello World!");
}