ES6: Iterating over a NodeList

nodelist-iteration.js

var elements = document.querySelectorAll("div"),
    callback = (el) => { console.log(el); };

// Spread operator
[...elements].forEach(callback);

// Array.from()
Array.from(elements).forEach(callback);

// for...of statement
for (var div of elements) callback(div);

Array.from(elements, callback)

You also can add custom iterator

elements[Symbol.iterator]();
elements.forEach(callback)

[].forEach.call(elements, callback)