Non-standard
This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.
This API is available on Firefox OS for privileged or certified applications only.
The getVisible() method of the HTMLIFrameElement is used to request the current visible state of the browser <iframe>.
Syntax
instanceOfDOMRequest = instanceOfHTMLIframeElement.getVisible();
Returns
A DOMRequest object to handle the getVisible() request's success and error cases. If the request is successful, the request's result is a Boolean indicating the visible state of the browser <iframe>.
Parameters
None.
Example
var browser = document.querySelector('iframe');
var request = browser.getVisible();
request.onsuccess = function() {
console.log('The visible state is: ' +
this.result ? 'true' : 'false');
}
Specification
Not part of any specification.
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | Not supported | Not supported | Not supported | Not supported | Not supported |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | Not supported | Not supported | 1.0.1 | Not supported | Not supported | Not supported |
Note: Use of the Browser API requires a privileged app, and browser and/or embed-apps permissions, depending on what you want to do. See Using the Browser API for more details.