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 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
Supported since Firefox 47, in chrome code only.
Unlikely ever to be supported in other browsers.