elo form elements ex
HTML
<form action="example/submit.html">
Name: <input type="text" name="name"><br>
Password: <input type="password" name="password"><br>
<button type="submit">Log in</button>
</form>
JavaScript
var form = document.querySelector("form"); console.log(form.elements[1].type);
console.log(form.elements.password.type);
console.log(form.elements.name.form == form);