Custom popup / message - adding custom script, getting student info

[kierenj]

Hi - I'm fairly new to Canvas and evaluating its potential use. I've found details of the API and LTI extensions.

What I'm trying to discern is whether it is possible to have some custom Javascript run in the context of a page - when a student logs in to the hosted Canvas instance, to display some information pulled from the canvas API / a separate API, which may be dependent on the logged in student's email address / name.

For instance, can I add a <script> tag to the landing page after login? Does JS have access to cookies/local storage which might store a JWT or similar, which can be validated via some endpoint or public key?

Thanks

[robotcars]

Hi kierenj,

Checkout the Canvas Theme hacks

https://community.canvaslms.com/docs/DOC-17354-awesome-canvaslms#CanvasThemes

How do I upload custom JavaScript and CSS files to an account? 

Take a specific look at:

• Canvancements - Canvas Enhancements  > GitHub - jamesjonesmath/canvancement: Enhancements to the Canvas LMS 
• GitHub - robert-carroll/ccsd-canvas: CanvasLMS - Theme hacks and feature augmentation 
• Developer Tools for the Canvas User 

Tagging Canvas Developers‌

• If you use the built in jQuery, you won't have to worry about cookies, but jQuery is moving toward EOL, so not recommended
• If you use Fetch API you shouldn't need to deal with cookies
• If you use XHR, there are some considerations to collect and handle the cookies and CSRF token I've worked out here pb.ajax.js · GitHub