JSFiddle - React, Tailwind, and code Playground
by Cody Lindley
HTML
<script src="https://dl.dropboxusercontent.com/u/2026291/firebug-lite-debug.js"></script>JavaScript
//All below return false
console.log(!!undefined);
console.log(!!null);
console.log(!!0);
console.log(!!'');
console.log(!!NaN);
//All below return true
console.log(!!1);
console.log(!!'false');
console.log(!![]);
console.log(!!{});
console.log(!!function(){});
console.log(!!/foo/);