dom class selector code example
Example 1: javascript get element by class
var elementsArray = document.getElementsByClassName("someclassname");
Example 2: get element by class
var elements = document.getElementsByClassName(names); // or:
var elements = rootElement.getElementsByClassName(names);
Example 3: js get element by class
document.getElementsByClassName('Name');
Example 4: javascript get element by class
var elements = document.querySelector(".class");