Examples
Example scripts for various things you can do with KubeJS
KubeJS UI
You can also always look at existing modpack using KubeJS UI to see how they do it onEvent('ui.m...
Custom Items
This is a startup_scripts/ event // Listen to item registry event onEvent('item.registry', even...
Custom Blocks
This is a startup script. onEvent('block.registry', event => { event.create('test_block', ...
Loot Table Modification
onEvent('block.loot_tables', event => { event.addSimpleBlock('minecraft:dirt', 'minecraft:r...
Item Modification
item.modification event is a startup script event that allows you to change properties of existin...
Block Modification
block.modification event is a startup script event that allows you to change properties of existi...
JEI Integration
Sub-types onEvent('jei.subtypes', event => { event.useNBT('example:item') event.userNBT...
REI Integration (WIP)
Note: REI integration only works on Fabric in 1.16. In 1.18+, it works on both Forge and Fabric! ...
FTB Quests Integration
onEvent('ftbquests.custom_task.75381f79', event => { log.info('Custom task!') event.chec...
Reflection / Java access
Very limited reflection is possible, but is not recommended. Use it in cases, when mod doesn't ha...
Painter API
About Painter API allows you to draw things on the screen, both from server and directly from cl...
Units
This page describes all functions and operations available for units Usage Most basic unit is p...
Chat Event
This script is peak of human evolution. Whenever someone says "Creeper" in chat, it replies with ...
Network Packets
This script shows how to use network packets: // Listen to a player event, in this case item rig...
Starting Items
This server script adds items on first time player joins, checking stages. GameStages mod is not ...
FTB Utilities Rank Promotions
With this script you can have FTB Utilities roles that change over time. Is for 1.12 only. Requi...
Clearlag 1.12
This script removes all items from world every 30 minutes. Only works in 1.12. // Create item wh...
Scheduled Server Events
At server load, you can schedule anything to happen at later time. Within callback handler you ca...
Changing Window Title and Icon
Yes, you can do that with KubeJS too. To change title, all you have to do is change title in kub...
Custom Fluids
Fabric not supported yet! onEvent('fluid.registry', event => { // Basic "thick" (looks lik...