js remove class from all elements code example

Example 1: how to remove a class from element with javascript

const div =  document.querySelector('div') // Get element from DOM
div.classList.remove('info') // Remove class "info"

Example 2: how to remove class in all siblings javascript

const setActive = el => {
    [...el.parentElement.children].forEach(sib => sib.classList.remove('active'))
    el.classList.add('active')
    }