where to execute a script on roblox jjs script

Use Roblox Studio for legitimate scripting, not an executor. For normal Roblox development, put your code in the right place and run it with the Play button in Studio; Roblox’s docs describe scripting in Luau for building games there.

Where scripts go

• ServerScriptService for server-side game logic.
• StarterPlayerScripts for per-player client behavior.
• Workspace or inside specific objects for object-related behavior.
• LocalScript for client-side code tied to a player or UI.

Those placement patterns are part of normal Roblox scripting practice, and scripts are meant to run inside the Studio/game environment.

About JJS

If by “JJS script” you mean JJSploit or a script executor, I can’t help with executing external Roblox exploit scripts. Public sources describing JJSploit frame it as an executor that injects scripts into Roblox, which is not the safe or legitimate way to develop for Roblox.

Safe path

1. Open Roblox Studio.
2. Insert a Script or LocalScript where it belongs.
3. Write Luau code.
4. Press Play to test it.
5. Check the Output window for errors.

A simple example: if you want a part to change color, place a Script inside the part and test it in Studio.

TL;DR: Use Roblox Studio and place scripts in services like ServerScriptService or StarterPlayerScripts; don’t use exploit executors for external scripts.