Can you use Headless UI with React or Vue?
Yes. Pick the package and documentation for your project. The Vue documentation is for Vue 3. Headless means the control supplies behavior and leaves the visual style to you. The examples use Tailwind CSS, and the underlying controls can also use your own CSS.
Does closing the dialog save the form?
You decide what Save does. In the React dialog, Escape or clicking outside the panel calls your close handler, the piece of code that responds to dismissal. Keep it separate from saving so closing a draft does not accidentally submit it. Add a title and a visible Cancel button.
What should you keep when you update Headless UI?
Headless UI is MIT-licensed. Keep your styles, dependency version and the code for opening, dismissing and saving in your project. Use the documentation for your package version when adjusting how the dialog chooses its first focus target.
How would you test Cancel and Save before wiring up a dialog?
Sketch a dialog that edits a fictional shop name. Label the opening button and mark where keyboard focus should land.
- Try dismissal from the keyboardTrace Tab and Shift+Tab inside the dialog. Then press Escape and confirm the draft is discarded or handled as you intended. Check where focus returns.
- Try an invalid saveLeave the shop name empty. Show the error beside the field and keep the dialog available so the visitor can correct it. This is behavior your app needs to supply and check.