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 Basics (Retired) Storing and Tracking Information with Variables Working with Strings and Finding Help

Posted by Humoyunmirzo Nosirov
Humoyunmirzo Nosirov
Courses Plus Student 5,154 Points

I couldn't understand how it is adding '+' to shout += "!!!";

what does + mean here

1 Answer

Steven Parker
Steven Parker
229,644 Points
Steven Parker
Steven Parker
229,644 Points

When used with strings, the "+" is a concatenation operator. It combines two strings to make a longer one.

The "+=" operator is a concatenating assignment. It adds the string on the right onto the end of the string on the left.

If that's not what you were asking about, please give a specific time reference in the video.