js find child element code example

Example 1: javascript get 2nd child element

//you can use the css nth-child property like this:
var second-child = document.querySeletorAll('[your element name]:nth-child(2)');

Example 2: get child of child javascript

var li = document.querySelector("li");
var number = 13;
li.children[0].children[0].innerHTML = number;

Example 3: how to get child element in javascript

let firstChild = parentElement.firstChild; 
Code language: JavaScript (javascript)