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Window closed Property

Window Object Reference Window Object

Example

A function that checks whether a window called "myWindow" has been closed or not:

function checkWin() {
    if (!myWindow) {
        document.getElementById("msg").innerHTML = "'myWindow' has never been opened!";
    } else {
          if (myWindow.closed) {
              document.getElementById("msg").innerHTML = "'myWindow' has been closed!";
          } else {
              document.getElementById("msg").innerHTML = "'myWindow' has not been closed!";
          }
    }
}

Try it yourself »

Definition and Usage

The closed property returns a Boolean value indicating whether a window has been closed or not.


Browser Support

Property
closed Yes Yes Yes Yes Yes

Syntax

window.closed

Technical Details

Return Value: A Boolean, true if the window has been closed, or false if the window is open

Window Object Reference Window Object

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