calling a java servlet from javascript

[ppcguy]

i've got a progress bar that tracks a process running on
a server (java servlet).

i know i can refresh the page and update the status...but
this results in the page being redrawn everytime.

is there a way i can call a servlet from javascript and
process the results directly - and in this case get the
percent done and then update the progress bar.

the servlet would just return an integer.

[Dag Sunde]

"ppcguy" <go*****@hehe.com> wrote in message
news:cP**************@news-wrt-01.rdc-nyc.rr.com...

i've got a progress bar that tracks a process running on
a server (java servlet).

i know i can refresh the page and update the status...but
this results in the page being redrawn everytime.

is there a way i can call a servlet from javascript and
process the results directly - and in this case get the
percent done and then update the progress bar.

the servlet would just return an integer.

The concept you're looking for have been given the fancy
acronym: AJAX.

Its just a way of saying: Use the old traditional method
of calling the servlet from a hidden <ifame>, and update the
opener.xxx on return, or...

....use the XmlHttpObject and set up a response callback.

Google for AJAX, or start here:
http://www.ajaxmatters.com/r/welcome

--
Dag.

[Joachim Zobel]

On Wed, 26 Oct 2005 00:09:44 +0000, ppcguy wrote:

i've got a progress bar that tracks a process running on a server (java
servlet).

i know i can refresh the page and update the status...but this results in
the page being redrawn everytime.

is there a way i can call a servlet from javascript and process the
results directly - and in this case get the percent done and then update
the progress bar.

the servlet would just return an integer.

You can use XmlHttpRequest and DOM Manipulation for this. The buzzword is
AJAX.

Sincerely,
Joachim

[Tien-Chih Wang]

Embed an applet class into your html can also achieve this, but xmlhttp
& javascript is still the hottest solution...

Sincerely,

Tien-Chih Wang
----
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http://www.onsofts.com/deepJobSearch.jsp