Window closed

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Example

A function to check if a 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 »

Description

The closed property returns true if the window is closed.

The closed property is read-only.

Syntax

window.closed

Return Value

Type	Description
A boolean	`true` if the window is closed, otherwise `false`.

Browser Support

window.closed is supported in all browsers:


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