Variable Scope in html pages

[Kevin Spencer]

JavaScript variables are not scoped beyond the currnet document. Sorry you
don't want to pass it, but that's what you have to do.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Neither a follower
nor a lender be.

 

[KenA]

Hi. Suppose I have 2 html pages. In the first html page I have the following
code:

<form id="Form1">
<script type="text/javascript">
function MyObject()
{
this.DoSomething = function()
{
v1 = 'var1'; }
}

mo1 = new MyObject();
mo1.DoSomething();
//alert( v1 ); </script>
</form>

So, in the scope of the first html page I have v1 == 'var1'

Now suppose I open a second page ... How can I read v1 in the first html
page. I don´t want to 'pass' the variable to the second page like we can do
it in post methods, I just like to 'enter' the scope of page 1 from page 2,
is it possible?

Suppose I load the second page without unloading the first page, like a pop
up or via link with target blank?

»»» KenA.

 

[FlyBoy]

From http://www.developer.irt.org/script/165.htm

If one window opens another:

<script language="JavaScript"><!--
function newWindow(file,window) {
msgWindow=open(file,window,'resizable=no,width=200,height=200');
if (msgWindow.opener == null) msgWindow.opener = self;
}
//--></script>

<form>
<input type="button" value="Open New Window"
onClick="newWindow('a.html','window2')">
</form>


Then to access a variable in the new window from the original window:

var myVar = msgWindow.myVar;


To access a variable in the original window from the new window:

var myVar = opener.myVar;


To access the contents of a form field in new window from the original
window:

var myVar = msgWindow.document.formName.formFieldName.value;


To access the contents of a form field in the original window from the new
window:

var myVar = opener.document.formName.formFieldName.value;


To access the contents of a form field in the original window from a frame
in the new window:

var myVar = top.opener.document.formName.formFieldName.value;

 

[MD Websunlimited]

Hi Ken,

To accomplish you'd have to have the handle to the other window. This is contained in the window.opener property. From there you can
access any page global vars.

 

[MD Websunlimited]

Kevin,

If the second page was opened by the first you can use the window.opener property to access the windows global vars.

 

[Kevin Spencer]

Yeah, Mike. That one slipped my mind.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Neither a follower
nor a lender be.

Hi Ken,

To accomplish you'd have to have the handle to the other window. This is

contained in the window.opener property. From there you can

 

[KenA]

Thanks All ... that´s very clarifying.
Regards, Ken.