Make alias to document.getElementById in Javascript

Question

How can I alias the function "document.getElementById" I've seen it done using $

Thanks

Answer 1

The new features introduced in ES6 let us improve on Chris Lloyd's answer, simplifying:

function $(id) { return document.getElementById(id); };

to:

const $ = id=> document.getElementById(id);

Answer 2

var $ = document.getElementById.bind( document );

Answer 3

Possibly the easiest/shortest way:

function $(id) { return document.getElementById(id); };