Problem with window.top. - Post.Byes

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dmjpro

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Join Date: Jan 2007

Posts: 2476
#1

Problem with window.top.

Jul 9 '08, 12:14 PM

[code=html]
<input type="button" name="abc" value=" Copy 2 Clipboard" onclick="window .top.value=this .value;" />
<a href="test.html " target="_blank" >Open a new window!!!!</a>
<input type="text" name="abc1" value="" onclick="this.v alue=typeof window.top.valu e!='undefined'? window.top.valu e:'';"/>
[/code]

Now i m opening the same page at a different window.
There if i click on the text box then i m getting the undefined value of top.value
Why it's happening?
can't i get the [b]top.value[b] from any children window of that top window?
Where i am wrong?

Debasis Jana.
Tags: None
dmjpro

Top Contributor

Join Date: Jan 2007

Posts: 2476
#2

Jul 9 '08, 01:09 PM

I changed my code to ....

I have my two source codes.
those are given below!

[code=HTML]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Simple Test</title>
<script type="text/javascript">
window.top.test _value = null;
function test_abc(){
window.top.test _value = "Debasis Jana....!!!!";
alert(window.to p.test_value);
}

function getTopVal(){
var tmp = window;
while(tmp.opene r){
tmp = tmp.opener;
}
alert(tmp.top.v alue);
}
</script>
</head>
<body">
<input type="button" name="abc" value=" Copy 2 Clipboard" onclick="window .top.value=this .value;" />
<a href="test1.htm l" target="_blank" >Open a new window!!!!</a>
<input type="text" name="abc1" value="" onclick="getTop Val();"/>
</body>
</html>

[/code]

[code=HTML]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<script type="text/javascript">
function getTopVal(){
var tmp = window;
while(tmp.opene r){
tmp = tmp.opener;
}
alert(tmp.top.v alue);
}
</script>
<title>Test!! !</title>
</head>

<body>
<input type="text" name="abc2" value="" onclick="getTop Val();"/>
</body>
</html>

[/code]

Now it's working as i expected!
:-)
Comment
hsriat

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Join Date: Jan 2008

Posts: 1653
#3

Jul 9 '08, 06:11 PM

What is this window.top.value?
Never heard about this.
Comment
acoder

Recognized Expert MVP

Join Date: Nov 2006

Posts: 16032
#4

Jul 10 '08, 09:02 AM

Not sure what you were trying to do. window.top usually refers to the top frame. If you wanted to set a value, you could have set a global variable.
Comment
dmjpro

Top Contributor

Join Date: Jan 2007

Posts: 2476
#5

Jul 10 '08, 11:23 AM

Originally posted by acoder

Not sure what you were trying to do. window.top usually refers to the top frame. If you wanted to set a value, you could have set a global variable.

See what i am trying to do i want to save a value some where and i want to make available this value to any children window of that window.
So i thought it's better to save in top window's reference.
Anyway i can also save in that window's reference.
Anyway by this experiment i came to know the actual reality of top. :-)

Debasis Jana
Comment
acoder

Recognized Expert MVP

Join Date: Nov 2006

Posts: 16032
#6

Jul 10 '08, 11:56 AM

Yes, window.test_val ue would have been enough. Then from the child windows, window.opener.t est_value should give you the value you need.
Comment
dmjpro

Top Contributor

Join Date: Jan 2007

Posts: 2476
#7

Jul 10 '08, 11:56 AM

Originally posted by acoder

Yes, window.test_val ue would have been enough. Then from the child windows, window.opener.t est_value should give you the value you need.

Yeah that also be fine. :-)
Thanks Acoder!
Comment
acoder

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Join Date: Nov 2006

Posts: 16032
#8

Jul 10 '08, 12:09 PM

No problem. You're welcome :)
Comment
dmjpro

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Join Date: Jan 2007

Posts: 2476
#9

Jul 11 '08, 06:44 AM

Originally posted by acoder

No problem. You're welcome :)

Thanks again!!
Sorry Acoder I forgot to mention one thing that in my case there is no way rather than using top.
Actually i want to save the value from a window which can be at any frame of the main window. And the child window may be from another frame of the main window.
So here is only option is top.

Debasis Jana.
Comment
acoder

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Join Date: Nov 2006

Posts: 16032
#10

Jul 11 '08, 09:15 AM

In that case, you could use window.top.test _value or top.opener.top. test_value (for frame in a popup window).
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dmjpro

Top Contributor

Join Date: Jan 2007

Posts: 2476
#11

Jul 11 '08, 09:59 AM

Originally posted by acoder

In that case, you could use window.top.test _value or top.opener.top. test_value (for frame in a popup window).

Yeah that's what i m using top ..and i already found the solution.
i am using this function to find out that value.

[code=JAVASCRIPT]
function getTopVal(){
var tmp = window;
while(tmp.opene r){
tmp = tmp.opener;
}
alert(tmp.top.v alue);
}
[/code]

Anyway, Thanks for your help!
Comment
acoder

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Join Date: Nov 2006

Posts: 16032
#12

Jul 11 '08, 11:10 AM

Yeah, I did see that, but I would avoid "value" because it can be confusing.
Comment
dmjpro

Top Contributor

Join Date: Jan 2007

Posts: 2476
#13

Jul 11 '08, 11:12 AM

Originally posted by acoder

Yeah, I did see that, but I would avoid "value" because it can be confusing.

Ohh...!!!
That's what you were saying.....test _value.
lolz!

Debasis Jana
Comment
acoder

Recognized Expert MVP

Join Date: Nov 2006

Posts: 16032
#14

Jul 11 '08, 11:27 AM

Yes, exactly! We finally got there ;)
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