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Reddit community list Join buttons

Add Reddit's native Join/Joined button with 2-column grid layout, using /subreddits/mine for accurate state

Πώς γίνεται η εγκατάσταση

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey, το Greasemonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Userscripts για να εγκαταστήσετε αυτόν τον κώδικα.

You will need to install an extension such as Tampermonkey to install this script.

Θα χρειαστεί να εγκαταστήσετε μια επέκταση διαχείρισης κώδικα χρήστη για να εγκαταστήσετε αυτόν τον κώδικα.

(Έχω ήδη έναν διαχειριστή κώδικα χρήστη, επιτρέψτε μου να τον εγκαταστήσω!)

Πώς γίνεται η εγκατάσταση

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Έχω ήδη έναν διαχειριστή στυλ χρήστη, επιτρέψτε μου να τον εγκαταστήσω!)

Δημιουργός
quantavil
Ημερήσιες εγκαταστάσεις
0
Σύνολο εγκαταστάσεων
0
Βαθμολογίες
0 0 0
Έκδοση
0.8
Δημιουργήθηκε την
17/11/2025
Ενημερώθηκε την
17/11/2025
Μέγεθος
10 KB
Άδεια
MIT
Εφαρμόζεται σε

Reddit Community List – Native Join Buttons

Add Reddit’s native Join/Joined button to each subreddit row inside .community-list on reddit.com, using the official shreddit-join-button web component. The script detects whether you already subscribe to a subreddit and reflects the correct state.

Features

  • Injects Reddit’s native shreddit-join-button into each .community-list row.
  • Checks /r/{sub}/about.json to respect existing subscriptions.
  • Works with dynamically loaded content via a DOM observer.
  • No special permissions required (@grant none).

Installation

This is a userscript designed for browser managers like Tampermonkey, Violentmonkey, or Greasemonkey.

  1. Install a userscript manager extension (e.g., Tampermonkey).
  2. Create a new userscript.
  3. Copy the contents of reddit-join/main.js into the new userscript.
  4. Save the script.
  5. Visit https://www.reddit.com/ and open a page that contains a .community-list (e.g., community discovery/explore pages). Buttons will appear automatically.

Usage

  • On pages with a .community-list, each subreddit entry shows a Join/Joined button on the right.
  • Clicking Join subscribes you to the subreddit; Joined indicates you’re already subscribed.
  • If you are not logged in or the subscription state can’t be determined, the button defaults to Join.

How It Works

  • Normalizes subreddit names (e.g., r/funny → funny) and caches subscription state to avoid repeated requests.
  • Fetches https://www.reddit.com/r/{name}/about.json with credentials to determine user_is_subscriber.
  • Creates a shreddit-join-button for each row with appropriate attributes (name, subreddit ID, labels, and styles).
  • Observes DOM mutations so newly added rows also receive buttons.

Limitations & Notes

  • Must be logged in for accurate subscription detection; otherwise it defaults to Join.
  • Relies on Reddit’s current DOM (.community-list) and component APIs; changes by Reddit may require updates.
  • Uses lightweight caching per session to reduce network calls.
  • Network errors are ignored gracefully; the UI still offers Join.

Development

  • Edit reddit-join/main.js and reload the page to test changes.
  • The script runs at document-idle and matches all https://www.reddit.com/* pages.