NodeList object in javascript

Question

Can anyone tell me what kind of object the NodeList is. I read that it is an array-like object and that it can be accessed via bracket notation, for example var a = someNode.childNode[0];. How is this possible since via bracket notation we can only access to the properties of an object, and as i know we can not have

Answer 1

A NodeList is collection of DOM elements. It's like an array (but it isn't). To work with it, you must turn it into a regular JavaScript array. The following snippet can get the job done for you.

const nodeList = document.getElementsByClassName('.yourClass'),       nodeArray = [].slice.call(nodeList); 

UPDATE:

// newer syntax const nodeList = Array.from(document.querySelectorAll('[selector]'))  // or const nodeList = [...document.querySelectorAll('[selector]')]