Run results for: null & undefined comparison

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36

Browser: Chrome 92

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var a = null;
var b = undefined;
var c = NaN;
var d = false;
var e = 'a';
var f = 0;

Tests:

_.isNull
_.isNull(a); _.isNull(b); _.isNull(c); _.isNull(d); _.isNull(e); _.isNull(f);
_.isUndefined
_.isUndefined(a); _.isUndefined(b); _.isUndefined(c); _.isUndefined(d); _.isUndefined(e); _.isUndefined(f);
_.isNil
_.isNil(a); _.isNil(b); _.isNil(c); _.isNil(d); _.isNil(e); _.isNil(f);
== null
a == null b == null c == null d == null e == null f == null
=== null
a === null b === null c === null d === null e === null f === null
=== undefined
a === undefined b === undefined c === undefined d === undefined e === undefined f === undefined