[Javascript] Re: Javascript Digest, Vol 39, Issue 21

[Jai Sankar N]

Dear All,
   
  Good morning to all of software guys, and advance thanks to those resolve my problem.
   
  i have result publication page. this page is devloped using C#.Net is working fine. but i want to take a print out that page. while printing the page i would like print only selected area(that is with out printing save, print and back button and left frame).
   
  i'm tried this one....
   
  <language="javascript" type="text/javascript">
  function pagePrint()
  {
  window.print();
  }
  </script>
   
  my C# code.
   
  void private butPrint_Click(object Sender, System.EventArgus e)
  {
  butPrint.Attributes.Add("OnClick","pagePrint();");
  }
   
  it will print all the page and also cutted in my right side.

  Please, resolve my problem and how to print the specific area.
   
  thanks to all
  Jai Sankar
  India.
  
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Today's Topics:

1. Re: AJAX app causing excessive browser memory usage (Rick Emery)
2. Re: AJAX app causing excessive browser memory usage (Rick Emery)


----------------------------------------------------------------------

Message: 1
Date: Tue, 23 May 2006 12:24:57 -0400
From: Rick Emery 
Subject: Re: [Javascript] AJAX app causing excessive browser memory
usage
To: javascript at LaTech.edu
Message-ID: <20060523122457.5k5n9jgc2kg00k4o at www.emery.homelinux.net>
Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes";
format="flowed"

Quoting Jonathan Buchanan :

> The problem in this case is that when handleXHRResponse() is called,
> "this" no longer refers to your xhrObj instance. You can use the
> built-in call[1] or apply[2] functions to execute the function in the
> scope of your xhrObj instance.

Just a quick note to say "thanks". I had worked around this by 
creating the xmlhttprequest object as a property of the window object. 
But I also needed access to some other properties of my custom object 
from the response handler, so I finally got around to sitting down 
with your example and understanding it. The application is now working 
as expected.

Thanks again!
Rick
-- 
Rick Emery

"When once you have tasted flight, you will forever walk the Earth
with your eyes turned skyward, for there you have been, and there
you will always long to return"
-- Leonardo Da Vinci



------------------------------

Message: 2
Date: Tue, 23 May 2006 12:30:38 -0400
From: Rick Emery 
Subject: Re: [Javascript] AJAX app causing excessive browser memory
usage
To: javascript at LaTech.edu
Message-ID: <20060523123038.njm5b9mp7lxc4gws at www.emery.homelinux.net>
Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes";
format="flowed"

Quoting Matt Warden :

> Rick Emery wrote:
>> I'm actually not creating a new one every 30 seconds; I create the xhr
>> object when the page first loads, and reuse it every 30 seconds to send
>> the request (and process the response).
>
> I would suggest not doing this. The object is meant to represent a
> request, not a connection. At minimum, the object and all its request
> and response content must remain in memory indefinitely rather than only
> for x milliseconds while you do your processing. At worst, the designers
> of the object assumed a short lifecycle and coded accordingly.

Changing this fixed the memory issues. Instead of creating one 
xmlhttprequest object and using it for the life of the application, I 
now create one when I need to make a request and destroy it after the 
response is handled. For some reason that I don't understand, my 
memory issues are gone and usage is steady for the life of the session.

Thanks!! (I'm not one for excessive use of puncuation, but felt like 
this deserved more than one exclamation point :-)

Rick
-- 
Rick Emery

"When once you have tasted flight, you will forever walk the Earth
with your eyes turned skyward, for there you have been, and there
you will always long to return"
-- Leonardo Da Vinci



------------------------------

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End of Javascript Digest, Vol 39, Issue 21
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