getelementsbyclassname with multiple classes code example

Example 1: javascript get element by multiple class

var list = document.getElementsByClassName("class1 class2");
var list = document.querySelectorAll(".class1.class2");

Example 2: javascript get element by multiple class names

document.getElementsByClassName('class1 class2')

Example 3: getelementbyclassname get multiple class

document.querySelectorAll('.a,.b')