JSFiddle - React, Tailwind, and code Playground

by javascriptenlightenment

HTML

<script src="https://getfirebug.com/firebug-lite-debug.js"></script>
<!-- disregard this pane, html is shown in the "result" pane -->




































































<h4><strong>&larr; Code Example from <a href="http://www.javascriptenlightenment.com/" target="_blank">JavaScript Enlightenment Book</a> by <a href="http://www.codylindley.com" target="_blank">Cody Lindley</a></strong></h4>

<p>JavaScript code is executed on page load. Click the "Run" button in the top bar to re-run the JavaScript code. Output is logged to the <a href="http://getfirebug.com/firebuglite" target="_blank">Firebug Lite</a> console below &darr;.</p>

JavaScript

var objA = {property: 'value'};
var pointer1 = objA;
var pointer2 = pointer1;

// update the objA.property, and all references (pointer1 & pointer2) are updated
objA.property = null; 

// logs 'null null null' because objA, pointer1, and pointer2 all reference the same object
console.log(objA.property, pointer1.property, pointer2.property);