get child by class name from an element javascript code example

Example 1: get child element by class javascript

var element = document.querySelector('#Element');
var elementChildren = element.querySelectorAll('.Element-child');

Example 2: javascript get child element by class

// get child element of #test with class my-class
var testContainer = document.querySelector('#test');
var childNodeByClass = testContainer.querySelector('.my-class');