Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript JavaScript and the DOM Getting a Handle on the DOM Using CSS Queries to Select Page Elements

Why can't we do this? document.querySelector('MyTitle');

instead we have to do it like this: ('[title=MyTitle]')?

1 Answer

Nicholas Grenwalt
Nicholas Grenwalt
46,626 Points

If you just inserted 'MyTitle' into querySelector it would be looking for a regular dom element with the name of 'MyTitle' specifically. When you use the bracket syntax you are searching for attributes that match a particular value on an attribute. In this case, they are looking for the first occurrence of an element where it's title attribute is set to MyTitle. It has nothing to do with what the actual text happens to say inside the element, but rather it is just for targeting purposes for styling, manipulation, etc..