mozbrowsermetachange 编辑

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The mozbrowsermetachange event is fired when a <meta> element related to web applications is added, removed or changed.

See below for the applicable types.

General info

Specification

Non standard

Interface

CustomEvent

Bubbles

Yes

Cancelable

Yes

Target

<iframe>

Default Action

None

Properties

details

The details property returns an anonymous JavaScript object with the following properties:

name

A DOMString representing the <meta> name attribute value. This can be viewmode, theme-color, theme-group, or application-name.

content

A DOMString representing the <meta> content attribute value, i.e. the content of the meta tag.

type

A DOMString representing the type of meta change that this event object represents. This can be added, changed, removed, or undefined.

lang Optional

A DOMString representing the <meta> name attribute value, if included. If not included, the value returned is undefined.

Example

var browser = document.querySelector("iframe");

browser.addEventListener("mozbrowsermetachange", function(event) {
  console.log("A meta tag has been " + event.details.type + ". Its name is " +
  event.details.name + ", and its content is " + event.details.content + ".");
});

Related Events

• mozbrowserasyncscroll
• mozbrowsercontextmenu
• mozbrowsererror
• mozbrowsericonchange
• mozbrowserloadend
• mozbrowserloadstart
• mozbrowserlocationchange
• mozbrowseropenwindow
• mozbrowsersecuritychange
• mozbrowsershowmodalprompt
• mozbrowsertitlechange
• mozbrowserusernameandpasswordrequired

See also

• Using the Browser API