JSFiddle - React, Tailwind, and code Playground

by BeNdErR

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore.js"></script>

JavaScript

var a = [
    {a:10},
    {b:20},
    {a:20}
]
alert(_.contains(a, "20"))