How to call a javascript function with the addon?

Add-ons Development
1

Hello!
I would like to create an addon that calls js functions on a web page.
The function is defined inside a web page script and I can call it using the firefox console. How do I call the function from the add-on?

Thanks for your help!

2

You can interact with the JS from a page using content scripts: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Content_scripts

3

Thanks for your help.
I used the content script but I still do not access the functions.

The script is defined in the web page:

//webpage

<script type="text/javascript" src="lib/note.js"></script>

//note.js
var a;

function test() {
	.....
}

The addon must call the function “test”.

Can you give me an example?
Thanks.

4

Hm, I thought this was linked from the content script guide, but I couldn’t see it at a quick glance, so here’s the direct link in case it really wasn’t linked from that article: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Sharing_objects_with_page_scripts#Accessing_page_script_objects_from_content_scripts

5

Thank you!
it works!