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Summary
Returns the number of frames (either <frame> or <iframe> elements) in the window.
Syntax
framesCount = window.length;
framesCountis the number of frames.
Example
if (window.length) {
// this is a document with subframes
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'Window.length' in that specification. |
Living Standard | |
| HTML5 The definition of 'Window.length' in that specification. |
Recommendation |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | Yes | ? | Yes | ? | ? | ? |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | Yes | Yes | ? | Yes | ? | ? | ? |
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