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

CSS CSS Selectors Going Further with Attribute Selectors and Pseudo-Classes Substring Matching Attribute Selectors - "Contains"

Ker Sing Tan
Ker Sing Tan
10,573 Points
Posted by Ker Sing Tan
Ker Sing Tan
10,573 Points

'substring' vs 'value'

Is substring means the value of an attribute?

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

An attribute might have a string value, but that would be an entire string. A "substring" is just a part of a string.

For example, in a string containing the word "balloon", one possible substring of it would be "all". So if we had a "contains" selector for class like this:

div[class*="all"] { }

This would match a div element that had the class "balloon", but it would also match one with a class of "fallout" or "wall".