Document

Document.body


const body = document.body
console.log(body)

Document.forms


index:

document.forms[0].elements[0].value

name:

document.forms.login.elements.name.value

Document.images


document.images[0].src

document.links[0].href

Document.title


console.log(document.title)

Document.getElementById()


const passwordElement = document.getElementById('password')
console.log(passwordElement.value)

Document.querySelector()


const passwordElement = document.querySelector('#password')
console.log(passwordElement.value)

Document.querySelectorAll()


const inputs = document.querySelector('input')
Array.from(inputs).map(i => i.value)

Document.write()


document.write('<h1>Lorem ipsum</h1>')