HTMLDialogElement.returnValue
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The returnValue
property of the
HTMLDialogElement
interface gets or sets the return value for the
<dialog>
, usually to indicate which button the user pressed to
close it.
Value
A DOMString
representing the returnValue
of the dialog.
Examples
The following example displays a button to open a <dialog>
containing
a form via the showModal()
method. From there, either button will close the
dialog.
<!-- Simple pop-up dialog box containing a form -->
<dialog id="favDialog">
<form method="dialog">
<p><label>Favorite animal:
<select name="favAnimal" required>
<option></option>
<option>Brine shrimp</option>
<option>Red panda</option>
<option>Spider monkey</option>
</select>
</label></p>
<menu>
<button>Cancel</button>
<button>Confirm</button>
</menu>
</form>
</dialog>
<menu>
<button id="updateDetails">Update details</button>
</menu>
<script>
(function() {
var updateButton = document.getElementById('updateDetails');
var dialog = document.getElementById('favDialog');
dialog.returnValue = 'favAnimal';
function openCheck(dialog) {
if (dialog.open) {
console.log('Dialog open');
} else {
console.log('Dialog closed');
}
}
function handleUserInput(returnValue) {
if (returnValue === 'Cancel' || returnValue == null) {
// User canceled the dialog, do nothing
} else if (returnValue === 'Confirm') {
// User chose a favorite animal, do something with it
}
}
// "Update details" button opens the <dialog> modally
updateButton.addEventListener('click', function() {
dialog.showModal();
openCheck(dialog);
handleUserInput(dialog.returnValue);
});
})();
</script>
Note: You can find this example on GitHub as htmldialogelement-basic (see it live also).
Specifications
Specification |
---|
HTML Standard # dom-dialog-returnvalue-dev |
Browser compatibility
BCD tables only load in the browser
See also
- The HTML element implementing this interface:
<dialog>
.