Answers for "js document get element by class"

javascript get element by class

var elementsArray = document.getElementsByClassName("someclassname");

get element by class

var elements = document.getElementsByClassName(names); // or:
var elements = rootElement.getElementsByClassName(names);

get element by class name

var y = document.getElementsByClassName('foo');
var aNode = y[0];

document.getElementsByClassName(); - DOM

document.getElementsByClassName();