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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

Internet Explorer Firefox Opera Google Chrome Safari

The closed property is supported in all major browsers.


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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