<dialog>

HTML <dialog> 元素表示一个对话框或其他交互式组件，例如一个检查员或窗口。

Attributes

This element includes the global attributes. The tabindex attribute must not be used on the <dialog> element.

open

Indicates that the dialog is active and available for interaction. When the open attribute is not set, it shouldn't be shown to the user.

Usage notes

• <form> elements can be integrated within a dialog by specifying them with the attribute method="dialog". When such a form is submitted, the dialog is closed with a returnValue attribute set to the value of the submit button used.
• The ::backdrop CSS pseudo-element can be used to style behind a <dialog> element, for example to dim inaccessible content whilst a modal dialog is active.

Examples

简单的例子

<dialog open>
  <p>Greetings, one and all!</p>
</dialog>

高级示例

当单击“更新详细信息”按钮时，此示例打开一个包含一个表单的弹出对话框。

HTML content

<!-- Simple pop-up dialog box, containing a form -->
<dialog id="favDialog">
  <form method="dialog">
    <section>
      <p><label for="favAnimal">Favorite animal:</label>
      <select id="favAnimal">
        <option></option>
        <option>Brine shrimp</option>
        <option>Red panda</option>
        <option>Spider monkey</option>
      </select></p>
    </section>
    <menu>
      <button id="cancel" type="reset">Cancel</button>
      <button type="submit">Confirm</button>
    </menu>
  </form>
</dialog>

<menu>
  <button id="updateDetails">Update details</button>
</menu>

JavaScript content

(function() {
  var updateButton = document.getElementById('updateDetails');
  var cancelButton = document.getElementById('cancel');
  var favDialog = document.getElementById('favDialog');

  // Update button opens a modal dialog
  updateButton.addEventListener('click', function() {
    favDialog.showModal();
  });

  // Form cancel button closes the dialog box
  cancelButton.addEventListener('click', function() {
    favDialog.close();
  });
})();

Result

Specifications

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

[1] See bug 840640.

Polyfills

Include this polyfill to provide support for older browsers.  

dialog-polyfill

See also

• The close event
• The cancel event
• HTML forms guide.