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 One Solution

Joseph Michelini
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Joseph Michelini
Python Development Techdegree Graduate 18,692 Points
Posted by Joseph Michelini
.a{fill-rule:evenodd;}techdegree seal-36
Joseph Michelini
Python Development Techdegree Graduate 18,692 Points

Confused about when it is necessary to iterate through selections and when it is not?

I'm not sure I have it straight in my head when it is necessary to use a for loop to iterate through your selections to apply styles.

Does any selection returning more than one element, even of the same kind, return a collection that needs to be iterated through?

Thanks in advance!

1 Answer

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

It depends on what the objective is, but if you're using a selector function that returns a collection you'll probably want to iterate through them.

Note that this relates only to dynamic changes made in JavaScript. More commonly, styles will be applied to multiple items at once using CSS.