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How to detect if DIV content is appear in browser or not ?

Answer 1

A:

but if javascript is disabled, you probably can't use innerText, etc...right?

PeterWong 2010-06-29 04:50:30

it's a property already exist to HtmlGenericControl and can be used any time in C#

Hotmoil 2010-06-29 05:07:58

oh sorry for misunderstanding. But just like @Larry said, you won't know the browser's state when you are in server side and that's make sense.Ask if you still can't get the way to do it^^

PeterWong 2010-06-29 11:27:01

Answer 2

A:

To detect if Javascript is enabled or not, you'll just have to get JS to alter some request in some way to indicate that it is present.

For example, you could rewrite the href of some links, or fill in a form input value, or (probably the best option) send an AJAX request back to the server. The server should then store that this particular session is JS enabled and take the necessary actions for future requests.

nickf 2010-06-29 04:58:09

Could you suppoert me with an example , please ?

Hotmoil 2010-06-29 05:04:27

Answer 3

A:

You can't use a Server Control to detect if the browser will have Javascript turned on or not for the current page. Reason: you're trying to predict the future since the page has not yet been sent to the client!

Use the techniques of nick's answer to detect JS, then store the answer in the user's session.

Added: See http://www.codeproject.com/KB/user-controls/CheckJavascriptEnabled.aspx

Larry K 2010-06-29 04:58:24

Answer 4

A:

index.html

<html>
  <head>
    <!-- Redirect in 10 seconds -->
    <meta http-equiv="refresh" content="10;url=http://localhost/Default.aspx" />
    <script>
      <!-- Redirect to same page, with querystring js = true -->
      window.location="http://localhost/Default.aspx?js=true";
    </script>
  </body>
    Redirecting to new page <noscript>that does not need javascript</noscript>
  </body>
</html>

In your Default asp.net page, you can check Request.QueryString["js"] for javascript support or not.

Holystream 2010-07-30 17:55:14

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How to detect if DIV content is appear in browser or not ?

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