HTMLIFrameElement.getCanGoForward()

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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 getCanGoForward() method of the HTMLIFrameElement is used to indicate whether it's possible to go forward in the navigation history of the browser <iframe>.

Syntax

There is a DOMRequest version and a Promise version:

var instanceOfDOMRequest = instanceOfHTMLIframeElement.getCanGoForward();
instanceOfHTMLIframeElement.getCanGoForward()
.then(function(result) { ... });

Returns

Returns either

  • A DOMRequest object to handle the request's success or error. If the request is successful, the request's result will be a boolean indicating if the history can be navigated forward (true) or not (false).
  • A Promise that resolves with a boolean that equals true if the history can be navigated forward or false if not.

Parameters

None.

Example

DOMRequest:

function canMoveFwd() {
  var request = browser.getCanGoForward();

  request.onsuccess = function() {
    if (request.result) {
      fwd.disabled = false;
      console.log("It's possible to navigate
                   the history forward.");
    } else {
      fwd.disabled = true;
      console.log("It's not possible to navigate
                   the history forward.");
    }
  }
}

Promise:

function canMoveFwd() {
  browser.getCanGoForward().then(function(result) {
    if (result) {
      fwd.disabled = false;
      console.log("It's possible to navigate
                   the history forward.");
    } else {
      fwd.disabled = true;
      console.log("It's not possible to navigate
                   the history forward.");
    }
  });
}

Specification

Not part of any specification.

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!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support 47 (47)[1] No support No support No support
Feature Android Android Webview Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support No support No support No support No support No support No support

[1] Supported in chrome code only.

See also

Tag del documento e collaboratori

 Hanno collaborato alla realizzazione di questa pagina: chrisdavidmills, wbamberg, teoli, ajaybhat, kscarfone, Jeremie
 Ultima modifica di: chrisdavidmills,