JSFiddle - React, Tailwind, and code Playground

by dhoerster

HTML

Falsy equality tests
<br/><hr/>

<ul></ul>

JavaScript

var x = 3, x1 = "3",
    y = "hello", y1,
    z = false, z1,
    zero = 0,
    theUL = $('ul'),
    displayFunc = function(text, condition) { theUL.append('<li>' + text + ' :: ' +  condition + '</li>');};

displayFunc("0 double equals false", 0==false);
displayFunc("Empty string double equals false", ""==false);
displayFunc("undefined double equals false", undefined==false);
displayFunc("1 double equals true", 1==true);
displayFunc("NaN double equals NaN", NaN==NaN);
displayFunc("undefined double equals null", undefined==null);