Scriptlet and Javascript

[Amarnath Joshi]

Hi,


I've a simple logic Code to increment a variable from javascript and Send it back to jsp.

i just writing simple code to explain the logic. My code will have scritplets forgive me.

I know usage of scriptlets is inside jsp is oldest but for the sake of logic.

<!--Jsp Page -->
<%
int i=0;
<input type="button" onclick="fun()"/>
 %>
<!-- Script as Follows-->
 <script>

function fun(){
<%i++;5>

 }

</script>
 

But My value of i is not incrementing its showing that function is undefined

[Amarnath Joshi]

Hi,
Please also Suggest if there is any other alternate in ajax to retrieve the values..

[Ulf Dittmer]

You have a very fundamental misconception of how JSPs work. Read http://www.javaranch.com/journal/200510/secret-life.html before you write any more code. Then you'll understand why what you're trying to do doesn't wok (and why it can't be made to work).

[Ulf Dittmer]

Yes, a JavaScript library like jQuery can use AJAX-like approaches to synchronize a JavaScript variable with a server-side variable.