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

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

BCD tables only load in the browser