getelementsbyclassname single code example

Example 1: getelementbyclass

var selector = document.getElementsByClassName('class-name');

Example 2: javascript document object model getElementsByClassName

document.getElementsByClassName('test')

Example 3: get elment by id within get element byclassname

var targetDiv = document.getElementById("foo").getElementsByClassName("bar")[0];
targetDiv.textContent = "Goodbye world!";