get class of element 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: javascript get class name
document.getElementById("myDIV").className = "mystyle";
Example 3: js get class property
let element = document.querySelector('.preset');
let style = getComputedStyle(element);
let bg = style.backgroundColor;
Example 4: element.classname javascript
let el = document.getElementById('item');
if (el.className === 'active'){
el.className = 'inactive';
} else {
el.className = 'active';
}