javascript
add javascript that will run on this domain.
back up your scripts in the options area (shortcut there by clicking the "JS" letters in the bottom right)
Javascript - A Firefox Add-on for Running Custom Scripts
"Javascript" is a Firefox add-on designed to boost efficiency and tailor user experience. It allows users to store and execute javascript code on any specific domain. The scripts are kept active across every page on the saved domain, ensuring a personalized browsing experience. The feature to back up scripts in the options area provides additional ease of use.
Add-on stats
By: chee
Creation date: 2018-10-05
Weekly download count: 281
Firefox on Android: Yes
Risk impact: Moderate risk impact 
Risk likelihood:
Manifest version: 2
Permissions:
- activeTab
- storage
- unlimitedStorage
Size: 395.25K
Email: ad*****@chee.party
URLs: Website
Ranking
# 663 ▼ 2
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
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Add-on summary
save some javascript in a browser_action to run on every page on a domain
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Easy to use
- Works well
- Convenient tool for scripting
- Powerful for users who can code JavaScript
- Allows for customization and automation
Cons
- Some functionality issues with local files
- No central management for scripts
- No way to track which sites scripts have been used on
- Saves a new script even when no code is written
Most mentioned
- Works well
- Easy to use
- Powerful for coding
- Issues with managing scripts
User reviews
Very convenient tool. I use this to trigger auto-scrolling.
```js
setInterval(() => window.scrollBy({
top: 100,
behavior: "smooth",
}), 100)
```
by sexy_pikachu, 2024-11-10
I can't open some websites owing to javascritpvoid(0) error
by roberta braga, 2024-10-04
by Владимир, 2024-07-20
Add-on safety
Risk impact
javascript requires a few sensitive permissions. Exercise caution before installing.
Risk likelihood
javascript has earned a fairly good reputation and likely can be trusted.
Upgrade to see risk analysis details