can I have a div with id as number?

Question

Can I have a div with id as number?

eg

Answer 1

You can also select that type of id(though it is definitely not the best practice to create such an id that starts with a number) by doing the following:

document.querySelector('div[id="12"]'); //or 
document.querySelectorAll('div[id="12"]'); //if you have multiple elements with equal ID.