W3cubDocs

/DOM

window.length

Returns the number of frames (either <frame> or <iframe> elements) in the window.

Syntax

framesCount = window.length;
  • framesCount is the number of frames.

Example

if (window.length) {
  // this is a document with subframes
}

Specifications

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support Yes ? Yes ? ? ?
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support Yes Yes ? Yes ? ? ?

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/window/length