knowing when a htmlpage is opened

[BeMe]

Hi,

I have a button on an asp page, when pressing it a html page opens with a table rendered on it, that page remains open, and when pressing the button again, i want to bring the focus to the open page, or - open a new page.
what happens now, is that if i press the button 5 times, i have on the old page - 5 tables :( how could i prevent that?
my code is:

var taskWindow = window.open("", "viewTaskWindow");

Thanks

[BeMe]

my code is: (I added another row)

var taskWindow = window.open("", "viewTaskWindow");
taskWindow.document.write(taskListTable);

[gits]

you could use the window's closed property to identify wheter the window is opened already ...

kind regards

[BeMe]

i'm really new with java script and i don't know how to do it, i tried a few ways but with no succeed, what i want to do is- i have an xsl and i want it to be renderd on the html page - once:

taskListTable = xml.transformNode(xsl);
var taskWindow = window.open("", "saveTaskWindow");
taskWindow.document.write(taskListTable);

i can't ask about the window because i open it right away.

[Frinavale]

You already have a reference to the child window opened.
So all you have to do is check to see if it's opened or closed. To do this you use the window's closed property.

[BeMe]

what's written in the code you gave me a link to, the variable 'myWindow' is not defined any where, when i tried that, i got an exception that - myWindow.closed is null. i'll tell you exactlly what i do:
i have a c# code (a btn), when that btn is pressed, i invoke a func that's written on default.aspx, that func opens a html page with a table, and that's it.
then, if i don't close the new html page and press again the btn, it doesn't open a new page, it just renders the table again in the exsisting html page.
so - the html page, after it opens on the first time is not a child any more...
what can i do??

Thank u very much on giving me u're time and helping!!

[Frinavale]

The example code I linked you to does work.

You should always check for null before using. If it's null then obviously the window doesn't exist and isn't opened.

I know what your problem is though.

What's happening is you're opening a window and it's called "saveTaskWindow ". Then the user clicks the button again....and you open a window called the "saveTaskWindow " at which time the content in the currently open "saveTaskWindow " is written over.

If you want more than one window open at a time then you have to give each window a unique name.

Check if the window exists (if it's not null) and that if it's open. If it does exist and is open, then try a new name for the window...checki ng if a window exists with the new name and if it's open.

:)

-Frinny