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This event is the most basic event class, parent of all other events. Parent class Object Can ...

REI Integration (Fabric Only)

Hide Items onEvent('rei.hide.items', event => { event.hide('example:ingredient') }) Add ...

JEI Integration

Sub-types onEvent('jei.subtypes', event => { event.useNBT('example:item') event.userNBT...

FTB Quests Integration

onEvent('ftbquests.custom_task.75381f79', event => { log.info('Custom task!') event.chec...

Scheduled Server Events

At server load, you can schedule anything to happen at later time. Within callback handler you ca...

Primitive Types

KubeJS Classes

Information Primitive types are objects that don't have a real class and don't inherit methods f...

String

KubeJS Classes

Class of string objects, such as "abc" (and in JS 'abc' works as well) Parent Object Variable...

Object

KubeJS Classes

Parent class of all Java objects. Parent None (and itself at the same time, don't question it)...

RecipeEventJS

Examples The most basic script to add a single recipe: onEvent('recipes', event => { even...

TagEventJS

This event is fired when a tag collection is loaded, to modify it with script. You can add and re...

List of all events

This is a list of all events. It's possible that not all events are listed here, but this list wi...

CommandEventJS

This event needs cleanup! Using it is not recommended. Information This event is fired when a c...

Information (Read this first!)

Website and FAQ: https://kubejs.latvian.dev/ Discord server: https://discord.gg/bPFfH6P Source ...

KubeJS

This wiki is still very much work in progress! Feel free to suggest changes in #kubejs-and-code D...

Clearlag 1.12

This script removes all items from world every 30 minutes. Only works in 1.12. // Create item wh...

FTB Utilities Rank Promotions

With this script you can have FTB Utilities roles that change over time. Is for 1.12 only. Requi...

Custom Items

This is a startup_scripts/ event // Listen to item registry event onEvent('item.registry', even...

Network Packets

This script shows how to use network packets: // Listen to a player event, in this case item rig...

Chat Event

This script is peak of human evolution. Whenever someone says "Creeper" in chat, it replies with ...

Reflection / Java access

Very limited reflection is possible, but is not recommended. Use it in cases, when mod doesn't ha...

Examples

Example scripts for various things you can do with KubeJS

Global

Constants, classes and functions

Classes

Available fields and methods and examples on how to use them

Events

Events that get fired during game to control recipes, world, etc.

Mod to-do

FTB Mods

WorldgenAddEventJS