web api instance property
Window: length property
Returns the number of frames (either <frame> or
<iframe> elements) in the window.
Value
A number.
Examples
if (window.length) {
// this is a document with subframes
}
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.