Can't parse trait values using Template literals(String Interpolation)
Sorry but this is not a bug, it simply doesn't work that way. Anyway refer always to the latest documentation https://grapesjs.com/docs/modules/Components-js.html#passing-properties-to-scripts as this method of passing properties was deprecated years ago.
Read full answer below βQuestion
GrapesJS version
- I confirm to use the latest version of GrapesJS
What browser are you using?
Chrome v103.0.5060.53
Reproducible demo link
https://codesandbox.io/s/grapes-js-template-literal-1p7sx2?file=/src/App.js
Describe the bug
How to reproduce the bug?
- Add a new Type with custom traits
- Parse the trait value using
var inputName = "{[ firstName ]}";
- Parse the trait value using String interpolation
var inputKey = "firstName";
var inputNameUsingTemplate = `{[ ${inputKey} ]}`;
What is the expected behavior? Both should give the trait value entered from the Component Settings Panel.
What is the current behavior? Looks like trait value can be parsed using only the first way and parsing via string interpolation gives {[ firstName ]} instead of the actual input value.
Demo: CodeSandbox

Code of Conduct
- I agree to follow this project's Code of Conduct
Answers (2)
Sorry but this is not a bug, it simply doesn't work that way. Anyway refer always to the latest documentation https://grapesjs.com/docs/modules/Components-js.html#passing-properties-to-scripts as this method of passing properties was deprecated years ago.
Thanks for reporting this, @bimsina.
Great question about Can't parse trait values using Template literals(String Interpolation). The recommended approach with Components is to use the event-driven API.
Start here:
- Check the GrapesJS documentation for your specific module
- Look for the
on()event listener method - 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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