JSFiddle - React, Tailwind, and code Playground

by Paulpro

HTML

<h1 class="foo">Headline</h1>
<h1 class="foo bar">Headline</h1>
<h1 class="bar">Headline</h1>

JavaScript

var foo = $('.foo').get();
var bar = $('.bar').get();
var myArr = [];
for(var i = 0; i < foo.length; i++)
    myArr.push(foo[i]);
for(i = 0; i < bar.length; i++)
    myArr.push(bar[i]);

alert(myArr.length);
alert($.unique(myArr).length);