DownloadRhino ModGet the files on 9Minecraft
What is the Rhino Mod and what does it actually do?
Rhino is a scripting library that other mods use to run JavaScript code, so you won't see it add blocks or items on its own. If a mod you installed depends on Rhino, its custom content and gameplay logic are powered by scripts running through this library.
How do I know if a mod needs Rhino?
Check the mod's dependencies on its download page or in your mod loader's error log. If a mod lists Rhino as a required dependency, it won't load or function without it.
Where do I put my Rhino scripts?
Scripts typically go in a scripts folder inside your game or world directory, depending on the mod using Rhino. Check the dependent mod's documentation, since it decides where it looks for script files.
How do I write my first Rhino script?
Create a .js file in the correct scripts folder and start with a simple event listener or function call that the host mod exposes. Reload the game or the scripts to see if it runs, then build up from there.
My script isn't loading — what should I check first?
Make sure the file has a .js extension, is in the right folder, and has no syntax errors, since a single typo can stop the whole file from running. Check the game log for a stack trace pointing to the line that failed.
How do I debug a Rhino script that throws errors?
Read the log output carefully — Rhino usually reports the file name and line number where the error occurred. Add temporary log or print statements in your script to confirm which parts actually execute.
How do Rhino events work?
Events let your script react to 
things happening in-game, like a player joining or a block being placed. You register a listener function for a specific event name, and the host mod calls it whenever that event fires.
things happening in-game, like a player joining or a block being placed. You register a listener function for a specific event name, and the host mod calls it whenever that event fires.Can two Rhino scripts share data with each other?
Yes, but the mechanism depends on the host mod — some expose a shared storage object, while others let you attach data to a global or persistent store. Check what the mod using Rhino provides before assuming scripts can see each other's variables.
Will Rhino scripts slow down my game?
Rhino itself is lightweight, but poorly written scripts that run every tick or loop over large lists can cause lag. Keep event handlers short and avoid heavy work inside frequently-fired events.
Do I need to know JavaScript to use Rhino?
Yes — Rhino runs JavaScript, so basic JS knowledge like variables, functions, and objects is required. You don't need to be an expert, but you should be comfortable reading and writing simple scripts.
What does the Rhino Mod do?
It's a lightweight scripting library that adds the JavaScript engine Rhino to Minecraft, providing JavaScript support for other mods. It doesn't do anything on its own.
Does Rhino Mod add any content by itself?
No. It's a library used by other mods, such as KubeJS, and doesn't do anything on its own.
What is Rhino Mod used for?
It provides JavaScript support so other mods can enable custom content and gameplay logic through scripts. It's a library used by KubeJS.
Which Minecraft versions does Rhino Mod support?
It supports Minecraft 1.21.9, 1.21.10, 1.21.11, 26.1, 26.1.1 and 26.1.2.
What mod loaders does Rhino Mod support?
It supports Fabric, Forge, NeoForge and Quilt.
Does Rhino Mod support ES6?
Yes. The JavaScript engine Rhino supports ES6.
Does Rhino Mod need Nashorn?
No. It doesn't depend on the built-in Nashorn engine that was removed in Java 15.
Is Rhino Mod a fork of Mozilla Rhino?
Yes. It's a fork of Mozilla's Rhino library, modified for use in mods.
What is Rhino Mod's relationship to KubeJS?
Rhino Mod is a library used by KubeJS.
Is Rhino Mod a library or does it add gameplay?
It's a library and utility, not a content mod. It enables custom content and gameplay logic through scripts in other mods.
