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window.showModalDialog

Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

This feature has been removed. Please fix your Web sites and applications.

This method was removed in Chrome 43, and Firefox 56.

The Window.showModalDialog() creates and displays a modal dialog box containing a specified HTML document.

Syntax

returnVal = window.showModalDialog(uri[, arguments][, options]);

where

returnVal is a variant, indicating the returnValue property as set by the window of the document specified by uri.
uri is the URI of the document to display in the dialog box.
arguments is an optional variant that contains values that should be passed to the dialog box; these are made available in the window object's window.dialogArguments property.
options an optional string that specifies window ornamentation for the dialog box, using one or more semicolon delimited values:

Syntax	Description
`center: {on \| off \| yes \| no \| 1 \| 0 }`	If this argument's value is `on`, `yes`, or 1, the dialog window is centered on the desktop; otherwise it's hidden. The default value is `yes`.
`dialogheight: height`	Specifies the height of the dialog box; by default, the size is specified in pixels.
`dialogleft: left`	Specifies the horizontal position of the dialog box in relation to the upper-left corner of the desktop.
`dialogwidth: width`	Specifies the width of the dialog box; by default, the size is specified in pixels.
`dialogtop: top`	Specifies the vertical position of the dialog box in relation to the upper-left corner of the desktop.
`resizable: {on \| off \| yes \| no \| 1 \| 0 }`	If this argument's value is `on`, `yes`, or 1, the dialog window can be resized by the user; otherwise its size is fixed. The default value is `no`.
`scroll: {on \| off \| yes \| no \| 1 \| 0 }`	If this argument's value is `on`, `yes`, or 1, the dialog window has scroll bars; otherwise its size is fixed. The default value is `no`.

Note: Firefox does not implement the dialogHide, edge, status, or unadorned arguments.

Examples

Try out showModalDialog().

Notes

showModalDialog() is currently being standardized as part of HTML5. The third argument (for additional options) is not present in the HTML5 version, and is (safely) ignored by both Safari and Chrome.

Specification

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	? — 43	No	3 — 56	4	No	5.1 5.1 See WebKit bug 151885 for possible future removal from Safari.