get class name in javascript code example

Example 1: js add class

var element = document.getElementById('element');
element.classList.add('class-1');
element.classList.add('class-2', 'class-3');
element.classList.remove('class-3');

Example 2: how to get element by class name javascript

document.getElementsByClassName("legend").style.display="none";

Example 3: javascript get class name

document.getElementById("myDIV").className = "mystyle";

Example 4: get name of class javascript

myObj.constructor.name

Example 5: how get class name

String className = this.getClass().getSimpleName();