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ModJS

Script Minecraft in JavaScript. Add items, blocks, recipes and whole dimensions, react to gameplay and rebuild the main menu, all from plain text files.
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ModJS 2026.11.31 (NeoForge 1.21.1)

File namemodjs-neoforge-mc1.21.1-2026.11.31.jar
Uploader
ItMeCaseyItMeCasey
Uploaded
Nov 9, 2026
Downloads
3
Size
1.7 MB
Mod Loaders
NeoForge
File ID
9531566
Type
B
Beta
Supported game versions
  • 1.21.1

Curse Maven Snippet

NeoForge

implementation "curse.maven:modjs-1783874:9531566"

Learn more about Curse Maven

What's new

Builds in this release: forge-1.20.1, forge-1.21.1, forge-26.1.2, forge-26.2, forge-26.3, neoforge-1.20.1, neoforge-1.21.1, neoforge-26.1.2, neoforge-26.2, neoforge-26.3.

Guide: https://itmecasey.com/wiki/modjs/

Changes:

  • CI: stop the game test server after 8 minutes (Forge keeps the process alive after the tests pass); pass or fail still comes from the self test log
  • Jade on real Forge and NeoForge 1.20.1 installs; README, changelog, status and porting notes for the name translation
  • 1.20.1: translate official Minecraft names to the names a real game has, so scripts can use Items.DIAMOND, server.getRecipeManager() and Commands.literal
  • Release 2026.11.31: bump all ten builds, changelog, readme, status, porting notes; upload the reobfuscated Forge jar for NeoForge 1.20.1
  • 1.20.1: reobfuscate the Forge jar to the names a real game uses; find item and block fields by their Forge names first
  • Forge 1.21.1: Quick Play drops startup events (proved in a real install); status
  • Recipe viewer events: log what the JEI plugin did; tour option to run with a viewer jar
  • Status: overlay and button pictures verified on all ten builds
  • Overlay (bars, text, rectangles, pictures, items, animation) and pictures on buttons on all ten builds; docs, wiki pages, frames
  • Planned GUI overlay API: retained elements and animation effects
  • Planned: GUI overlay drawing API
  • Forge 1.21.1: swap in the scripted title screen from ScreenEvent.Init.Pre (Forge never posts Opening); notes; planned button images
  • Status: wiki deployed
  • Changelog: 2026.11.30 is released; status note for the wiki pages

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