Modal window. showmodaldialog

1. Basic Knowledge

Showmodaldialog () (ie 4 + supported) Showmodelessdialog () (ie 5 + supported) The window. showmodaldialog () method is used to create a modal dialog box that displays HTML content. The window. showmodelessdialog () method is used to create a non-modal dialog box that displays HTML content.

2. Usage

Vreturnvalue = Window. showmodaldialog (Surl [, varguments] [, sfeatures]); Vreturnvalue = Window. showmodelessdialog (Surl [, varguments] [, sfeatures]);

3. parameter description

Parameter Name	Nature	Type	Function
Surl	Required	String	Specifies the URL of the webpage to be displayed in the dialog box.
Varguments	Optional	Variant	Used to pass parameters to the dialog box. The parameter type is not limited. The dialog box uses window. dialogarguments to obtain the passed parameters.
Sfeatures	Optional	String	Used to describe the appearance and other information of the dialog box.

4. sfeatures parameter description

Parameter Name	Parameter attributes	Description
Dialogheight	Npx	Dialog height, not smaller than PX
Dialogwidth	Npx	Dialog Box width
Dialogleft	Npx	Distance from the left of the Main Window
Dialogtop	Npx	Distance from the main window
Center	{Yes | no | 1 | 0}	Whether the window is centered. The default value is yes.
Help	{Yes | no | 1 | 0}	Whether to display the Help button. The default value is yes.
Resizable	{Yes | no | 1 | 0}	Whether the size can be changed. The default value is no.
Status	{Yes | no | 1 | 0}	Whether to display the status bar. The default value is Yes [modeless] or no [modal].
Dialoghide	{Yes | no | 1 | 0 | on | off}	Whether the dialog box is hidden during print or print preview. The default value is no.
Scroll	{Yes | no | 1 | 0 | on | off}	Specifies whether the scroll bar is displayed in the dialog box. The default value is yes.
Edge	{Sunken | raised}	Specifies the border style of the dialog box. The default value is raised.
Unadorned	{Yes | no | 1 | 0 | on | off}	The default value is no.
Note: The dialoghide, edge, and unadorned attributes are used in HTA (HTML aplication) and are generally unavailable on webpages.

5. varguments is used to pass Parameters. There is no restriction on the type. For the string type, the maximum value is 4096 characters. You can also pass objects. For example:

Parent.htm <SCRIPT> Window. showmodaldialog ("sun.htm", "passed parameters", "Help: No; scroll: No "); </SCRIPT> Sun.htm <SCRIPT> Alert ("Incoming parameters:" + window. dialogarguments ); </SCRIPT>

6. the return value uses window. returnvalue to return information to the window that opens the dialog box. It can also be an object. For example:

Parent.htm <SCRIPT> Result = Window. showmodaldialog ("son.htm", "", "Help: No; scroll: No "); Alert (result ); </SCRIPT> Son.htm <SCRIPT> Window. returnvalue = "store the returned results here "; </SCRIPT>

7. Prevent opening a new window after submission in the modal window
Add <base target = "_ Self">

8. Call the parent window method and PASS Parameters

parent.htm son.htm