Window length Property
Example
Find out how many <iframe> elements there are in the window:
var x = window.length;
Try it Yourself »
More "Try it Yourself" examples below.
Definition and Usage
The length property returns the number of <iframe> elements in the current window.
Tip: This property is often used together with the window.frames property.
Note: This property will also work for <frame> elements. However, the <frame> element is not supported in HTML5.
This property is read-only.
Browser Support
| Property | |||||
|---|---|---|---|---|---|
| length | Yes | Yes | Yes | Yes | Yes |
Syntax
window.length
Technical Details
| Return Value: | A Number, representing the number of frames in the current window |
|---|
More Examples
Example
Loop through all frames on a page, and change the location of all frames to "w3schools.com":
var frames = window.frames;
var i;
for (i = 0; i < frames.length; i++) {
frames[i].location = "https://www.w3schools.com";
}
Try it Yourself »
Related Pages
HTML reference: HTML <iframe> tag
❮ Window Object
