JSFiddle - React, Tailwind, and code Playground

HTML

<div id='each'>
</div>
<div id='plain'>
</div>
<div id='assert'>
</div>

JavaScript

var array = ["a"];

$.each(array, function() { $('#each').append(typeof this) });
$('#plain').append(typeof array[0]);

$.each(array, function(index) { 
    $('#assert').append((array[index] === this).toString()) 
});