Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript and the DOM Getting a Handle on the DOM Select an Element by ID

Posted by JASON LEE
JASON LEE
17,352 Points

querySelector

Why wouldn't the querySelector method work? For instance, instead of document.getElementByID('headline'), use document.querySelector('headline') ?

1 Answer

jb30
jb30
44,806 Points

document.getElementById('headline') is equivalent to document.querySelector('#headline'). The # specifies that 'headline' is an id. document.querySelector('headline') selects the first element with a <headline> tag, which is not a standard html tag. If the element with the id 'headline' has an <h1> tag and is the first h1 element on the page, you could select it using document.querySelector('h1').