Published by GPWC

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About JS Run

1. Simple and lightweight application for Javascript coding and code execution. Please, note!

JS Run Customer Insights

1. A recent (6 months ago-ish) Android update wrecked a lot of text processing apps so that the keyboard covers the text & the cursor for text insert jumps around erratically; this app is no exception (using Sam J7 Star / And9; 5/10 patch).I love the convenience this app gives me, when ever I figure out a potential fix to a bug I just get my phone and run a quick test, I also use it to write down quick algorithms when I'm not on my PC, works great, with that being said, Please add an undo and re-do button, I hate how when my keyboard is up, I can't scroll to the base of my IDE.very good.

2. small annoyance: with dark theme, long-pressing to highlight a block results in the previous 6 lines of text becoming overshadowed by android's "cut copy paste..." box, (which itself is hard to read in the dark theme) .

3. :P I've sent you an email regarding the bug in dark mode and line numbers, overall this is a fantastic app for creating small javascript snippets and for practicing code challenges! Will change to 5 star after the bug fixes.So I first got it and it worked well at first.

4. It doesn't have a paid version, which is already really good, it has no ads, and guess what- it has a dark mode! Some keywords are color coded, and it also lets you save and load things! Only things I think could be better would be that whenever an error occurs, it skips lines with comments and such.

5. It's still usable in dark theme (if you are bold and start extending the selection, the overlay goes away), but it's unexpected behavior.[Edited] Dark mode has been fixed well done! But then line numbers are still buggy on mine so I guess I won't use it for now.

6. Also the scroll doesn't have a natural swipe feel like native apps, not convenient when you want to scroll a long page of code.Pros: works as a super basic text editor / compiler with code hinting.

7. Array and object data outputted to the console is staggered and displayed in a very readable way, instead of as a long line of comma separated values strung together between two brackets, as with other poorly designed apps.

8. When there are many lines to scroll through, the cursor behaves badly and jumps about following the lowest line displayed or, sometimes, your scrolling finger.

9. One thing to fix: When I use the dark theme I cannot see the"Cut Copy Paste" menu very well.

10. Although I find myself frustrated by the clumsy copy paste, didn't find how to undo/redo, the virtual keyboard sometimes gets in the way and hides what you are typing.

11. However, the dark them makes the copy and paste menu on Android impossible to see.

Steps to Troubleshoot & Fix JS Run Issues

1. Fix JS Run Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart JS Run: Restarting the app will resolve most errors.
  2. Update the JS Run App. Here is how:
    1. On Android goto PlayStore » Search for "JS Run" » Open JS Run » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for JS Run » click "UPDATE".
  3. Clear JS Run app cache: Clearing cached data will force your app to retrieve the latest data directly from JS Run servers.
    1. On Android, goto Settings » Apps » Select "JS Run" » click Storage » click "Clear Cache".
  4. Check JS Run app permissions. If any of these permissions required to use your device's features are disenabled, JS Run might not work.
  5. Uninstall and reinstall JS Run. If nothing else has worked, completely uninstall JS Run then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing JS Run not working


2. Fix JS Run Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make JS Run be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to JS Run not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, JS Run may not be able to connect to the Internet when running in the background.

Reported Issues