$.js
Get the first matching element in the DOM.
Works in all modern browsers, and at least back to IE9.
/*!
* Get the first matching element in the DOM
* (c) 2019 Chris Ferdinandi, MIT License, https://gomakethings.com
* @param {String} selector The element selector
* @param {Node} parent The parent to search in [optional]
* @return {Node} The element
*/
var $ = function (selector, parent) {
return (parent ? parent : document).querySelector(selector);
};