HTMLDialogElement: show() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2022.
Theshow() method of theHTMLDialogElement interface displays the dialog modelessly, i.e., still allowing interaction with content outside of the dialog.
Syntax
js
show()Parameters
None.
Return value
None (undefined).
Exceptions
InvalidStateErrorDOMExceptionThrown if the dialog is already open and modal (i.e., if the dialog has already been opened with
HTMLDialogElement.showModal()).
Examples
Basic usage
The following example shows a simple button that, when clicked, opens a<dialog> containing a form via theshow() method.From there you can click theCancel button ("X") to close the dialog (via theHTMLDialogElement.close() method), or submit the form via the submit button.
HTML
html
<!-- Simple pop-up dialog box, containing a form --><dialog> <form method="dialog"> <button type="button">X</button> <section> <p> <label for="favAnimal">Favorite animal:</label> <select name="favAnimal"> <option></option> <option>Brine shrimp</option> <option>Red panda</option> <option>Spider monkey</option> </select> </p> </section> <menu> <li> <button type="reset">Reset</button> </li> <li> <button type="submit">Confirm</button> </li> </menu> </form></dialog><button>Update details</button>JavaScript
js
const updateButton = document.getElementById("updateDetails");const cancelButton = document.getElementById("cancel");const dialog = document.getElementById("favDialog");dialog.returnValue = "favAnimal";function openCheck(dialog) { if (dialog.open) { console.log("Dialog open"); } else { console.log("Dialog cancelled"); }}// Update button opens a modeless dialogupdateButton.addEventListener("click", () => { dialog.show(); openCheck(dialog);});// Form cancel button closes the dialog boxcancelButton.addEventListener("click", () => { dialog.close("animalNotChosen"); openCheck(dialog);});Results
Specifications
| Specification |
|---|
| HTML # dom-dialog-show-dev |
Browser compatibility
See also
- The HTML element implementing this interface:
<dialog>.