Window: length-Eigenschaft

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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Gibt die Anzahl der Frames (entweder <frame> oder <iframe> Elemente) im Fenster zurück.

Wert

Eine Zahl.

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

Specification
HTML # dom-length-dev