classList

Estimated reading time: 1 minute

classList

document.--.classList = 'foo'
document.--.classList.add('foo');
document.--.classList.remove('foo');
document.--.classList.toggle('foo');
document.--.classList.contains('foo');
document.--.classList.replace('old-class','new-class');

className

as like contain . return boolean (true or false)

----.className === 'foo'

clientHeight

document.body.clientHeight
document.body.clientWidth
document.body.clientTop
document.body.clientLeft

id

---.id = 'me-id'

innerHTML

---.innerHTML = 'me'

date / time

mdn