Dialog open Property

Open a dialog window:

document.getElementById("myDialog").open = true;

Description

The open property sets or returns whether a dialog should be open or not.

This property reflects the <dialog> open attribute.

When present, it specifies that the dialog element is active and that the user can interact with it.

Return the open property:

dialogObject.open

Set the open property:

dialogObject.open = true|false

Value	Description
true\|false	Specifies whether a dialog window should be open or not true - The dialog window is open false - Default. The dialog window is not open

Return Value:	A Boolean, returns true if the dialog window is open, otherwise it returns false

Find out if a dialog window is open:

let x = document.getElementById("myDialog").open;

<dialog> was introduced in HTML 5 (2014).

It is supported in all modern browsers:


Chrome	Edge	Firefox	Safari	Opera
Yes	Yes	Yes	Yes	Yes

<dialog> is not supported in Internet Explorer 11 (or earlier).