Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript

Sam Muir
Sam Muir
16,745 Points

When declaring let, a console error is thrown (Uncaught SyntaxError: Block-scoped declarations)

When I try and open person.html and use let, a console error is thrown (details below):

Navigated to http://port-80-qe2ysckz1w.treehouse-app.com/person.html person.html:14 Uncaught SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode

Don't know too much about Strict Mode, so if anyone can enlighten me then that would be appreciated :)

Steven Parker
Steven Parker
221,297 Points

:x: You can't share a direct URL to your workspace, it's temporary and only exists while you are using it.

:information_source: But you can use the snapshot function in the workspace and provide the link to that.

1 Answer

Steven Parker
Steven Parker
221,297 Points

:point_right: Try enabling strict mode for your program.

To enable strict mode, just place this line at the top of your JavaScript code:

"use strict";