Custom block icon

Hi @mingxin-yang you can read here how to create and update Blocks. In case you need to update an icon/label of the Block, you can do something like this:

editor.Blocks.get('BLOCK-ID').set({ 
 label: 'My block', 
 media: '<svg...', // eg. your svg image
})

Thanks for reporting this, @mingxin-yang.

Great question about Custom block icon. The recommended approach with GrapesJS is to use the event-driven API.

Start here:

1. Check the GrapesJS documentation for your specific module
2. Look for the on() event listener method
3. Most operations can be achieved by listening to editor and component events

Common patterns:

// Listen for changes
editor.on('change', () => console.log('something changed'));

// Component lifecycle
editor.on('component:mount', (c) => console.log('component ready', c));
editor.on('component:update', (c) => console.log('component updated', c));

If you're still stuck:

• Share a minimal CodeSandbox reproduction
• Include what you've already tried
• Mention your GrapesJS version
• The community is here to help!