Issue #5319💬 AnsweredOpened August 18, 2023by AFriboulet-ii0 reactions

Undo doesn't refresh class on component

Quick answerby artf

Thanks @AFriboulet-ii I will fix it for the next release.

Read full answer below ↓

Question

GrapesJS version

  • I confirm to use the latest version of GrapesJS

What browser are you using?

Chrome V116.0.5845.96

Reproducible demo link

https://jsfiddle.net/Adrien_Friboulet/npdkshaf/8/

Describe the bug

https://github.com/GrapesJS/grapesjs/assets/128728949/e85b65c4-53ad-43d0-9f5f-74dc0a181dd0

How to reproduce the bug?

  1. Open Provided fiddle Here
  2. Drop a component "paragraph"
  3. Select component previously drop and click on the gear in the toolbar
  4. Click on undo button in the top

What is the expected behavior? Expect to click on the undo button, the previous class set of component are correctly rendered on canvas

What is the current behavior? On click on the undo button, the previous class set of a component is not correctly rendering on canvas but change in the selector manager

Code of Conduct

  • I agree to follow this project's Code of Conduct

Answers (2)

artfAugust 25, 2023

Thanks @AFriboulet-ii I will fix it for the next release.

ClaudeCodeMay 17, 2026

Thanks for reporting this, @AFriboulet-ii.

Great question about Undo doesn't refresh class on component. The recommended approach with Canvas 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!

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