# Create A Block

## Create Your Block Class
JavaScript:
```javascript
import { Identifier, BlockState, BlockSettings, ActionResult, CustomBlock, BuiltinRegistry } from 'minecraft';

const ironBlock = BuiltinRegistry.BLOCK.get(new Identifier('minecraft:iron_block'));

class MyBlock extends CustomBlock {
    constructor() {
        super(new BlockSettings(ironBlock.getMaterial(), ironBlock.getMaterialColor()));
    }

    onUse(world, blockState, blockPos, side, player, hand) {
        world.setBlockState(blockPos.offset(side), BlockState.getDefaultState(new Identifier('minecraft:stone')));
        return ActionResult.SUCCESS;
    }
}
```

TypeScript:
```typescript
import { Identifier, BlockState, BlockSettings, ActionResult, World, Pos, Hand, PlayerEntity, Direction, CustomBlock, BuiltinRegistry } from 'minecraft';

const ironBlock = BuiltinRegistry.BLOCK.get(new Identifier('minecraft:iron_block'));

class MyBlock extends CustomBlock {
    constructor() {
        super(new BlockSettings(ironBlock.getMaterial(), ironBlock.getMaterialColor()));
    }

    onUse(world: World, blockState: BlockState, blockPos: Pos, side: Direction, player: PlayerEntity, hand: Hand): ActionResult {
        world.setBlockState(blockPos.offset(side), BlockState.getDefaultState(new Identifier('minecraft:stone')));
        return ActionResult.SUCCESS;
    }
}
```

## Register Your Block
```javascript
import { Registry, Identifier } from 'minecraft';

Registry.register(Registry.BLOCK, new Identifier('modid', 'my_block'), new MyBlock());
```

## Register Your Block Item
```javascript
import { Registry, Identifier, BlockItem, ItemSettings } from 'minecraft';

Registry.register(Registry.ITEM, new Identifier('modid', 'my_block'), new BlockItem(new Identifier('modid', 'my_block'), new ItemSettings().itemGroup('building_blocks')));
```