Window closed property

Definition and usage

If the window is closed, then closed The property returns true.

closed The property is read-only.

See also:

open() method

close() method

Example

Function to check if the window is closed:

function checkWin() {
  if (!myWindow) {
    text = "It has never been opened!";
  } else {
    if (myWindow.closed) {
      text = "It is closed.";
    } else {
      text = "It is open.";
    }
  }
}

Try it yourself

Syntax

window.closed

Return value

Type Description
Boolean value If the window is closed, it is true, otherwise it is false.

Browser support

All browsers support window.closed:

Chrome IE Edge Firefox Safari Opera
Chrome IE Edge Firefox Safari Opera
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