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 REST APIs with Express Create, Read, Update, Delete Edit A Quote

Posted by johnywick
johnywick
3,231 Points

how to read this style of writing please!

(item => item.id == newQuote.id);

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

That's an "arrow function expression" which creates an anonymous function. Other than some subtle functional differences that probably don't apply here, it would be essentially equivalent to:

(function (item) {return item.id == newQuote.id;});

This is part of the newer language syntax covered in the Getting Started With ES2015 and Introducing ES2015 courses.

johnywick
johnywick
3,231 Points

new style of writing is confusing me.
thank you very much.

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

johnywick — You might want to take one of those courses when you get a chance!

Glad I could help. You can mark a question solved by choosing a "best answer". And happy coding!