JSFiddle - React, Tailwind, and code Playground

by olvlvl

HTML

<p>Firebug no longer report errors on access to undefined objects properties.</p>

<p><code>a.undefined_property</code> should trigger an "undefined" error, just like <code>b.undefined_property</code> does. Note that <code>f=b['undefined_property']+1</code> does not trigger an "undefined" error when it should.</p>

JavaScript

var a = {},
    b,
    c = a.undefined_property + 1,
    d = a['undefined_property'] + 1,
    e = b.undefined_property + 1,
    f = b['undefined_propery'] + 1;