js get nth child code example

Example 1: javascript get element nth child

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

Example 2: how to get the nth child of dom js

var c = document.getElementById("myDIV").childNodes;
  c[1].style.backgroundColor = "yellow";//first child
  c[2].style.backgroundColor = "red";//second child
  c[-1].style.backgroundColor = "green";//last child
  c[-2].style.backgroundColor = "blue";//secound last child