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!

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 (Retiring) Getting a Handle on the DOM Practice Selecting Elements

Selecting descendant element of element by tags

nav.getElementsByTagName('a') doesn't work. Don't know why, MDN uses table.getElementsByTagName('td'); as an example.

Erik Shumkov
.a{fill-rule:evenodd;}techdegree seal-36
Erik Shumkov
Front End Web Development Techdegree Graduate 21,667 Points

"nav.getElementsByTagName('a') doesn't work."

When you select nav.getElementsByTagName('a')

have you made sure that nav is saved to a variable?

Like this: var nav = document.getElementsByTagName('nav')[0]; ?

Otherwise it doesnt know what you are selecting if nav isnt saved to a variable.