Lifecycle Hooks

Blocks in LegoDOM have a simple lifecycle managed by the snap (mount) and unsnap (unmount) mechanism.

mounted()

Called immediately after the block is connected to the DOM and its template has been rendered. This is the place to fetch data or set up subscriptions.

{
  mounted() {
    console.log("Block mounted!", this.$element);
    this.fetchData();
  }
}

unmounted()

Called when the block is removed from the DOM (unsnapped). Use this to clean up timers or event listeners that were not attached via b-* directives.

{
  unmounted() {
    // Cleanup 
    clearInterval(this.timer);
  }
}

updated()

Called after the block's state changes and the DOM has been updated. LegoDOM batches updates, so this will only run once per render cycle even if multiple state properties change.

{
  updated() {
    console.log("Block re-rendered");
  }
}