Issue #5090πŸ’¬ AnsweredOpened May 3, 2023by FaisalShaikhHA1 reactions

Component script function runs twice after page save

Quick answerby artf❀ 1

As explained here you should not reimport the output HTML to edit the project, only the JSON.

Read full answer below ↓

Question

GrapesJS version

  • I confirm to use the latest version of GrapesJS

What browser are you using?

112.0.5615.137 (Official Build) (arm64)

Reproducible demo link

https://grapesjs.com/demo.html

Describe the bug

Component definition:

editor.DomComponents.addType("my-test", {
        model: {
            defaults: {
                name: "Testing",
                components: "Hello testing",
                script: function () {
                    alert("hello");
                },
            },
        },
    });

When dropped, saved, and reload there are two places that call the same script. One in the saved HTML/JSON and one added by Grapesjs itself.

<script class="">
var items = document.querySelectorAll('#if1fgr');
          for (var i = 0, len = items.length; i < len; i++) {
            (function(){
alert("hello");
}.bind(items[i]))();
          }
</script>
------------------------------------------------------------------------------------------------------------------
<div data-id="if1fgr">
   <script>
        setTimeout(function() {
         var item = document.getElementById('if1fgr');
        if (!item) return;
        (function(){
     alert("hello");
     ;}.bind(item))({})
      }, 1);
   </script>
</div>

How to reproduce the bug?

  1. Add a custom component type with a script function.
  2. Drop it and save the page.
  3. Reloading the page runs the script function twice.

What is the expected behavior? The script function should be running only once.

What is the current behavior? The script function runs twice.

Code of Conduct

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

Answers (2)

artfβ€’ May 8, 2023

As explained here you should not reimport the output HTML to edit the project, only the JSON.

ClaudeCodeβ€’ May 17, 2026

Thanks for reporting this, @FaisalShaikhHA.

Great question about Component script function runs twice after page save. The recommended approach with Components 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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