Window.length - Web APIs 编辑
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
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