how a jsp function execute when javascript's function call?

Question

<script language="javascript"> 
var counter=0; 
var i=1;
function saveclick() 
{ 
<%j++;%>

    if(counter==3)
    { 
alert(counter);

}


else {

document.getElementById("error").innerHTML ="<%=qarr[j]%>"

  }
}

</script>

here i am using a qarr an array of String and its return String of corresponding index of array. But when i click on button this javascripts' saveclick function execute but innerhtml shows only one String all times. I want that when i click on button then js function execute and every time new String appear in innerHtml. please do needful in this matter.

Suresh Atta · Accepted Answer · 2013-07-03T09:47:40.293

1

Jsp plays on server side and javascript plays on client side.

Java needs compiled code and Javascript is just a scripting language interpreted by the browser.

You need to either make a request to server(HTML forms/AJAX) for new content or Maintain Json object in client side itself while page loading and use it later.

But You cannot mix them.

edited Jul 03 '13 at 09:47

answered Jul 03 '13 at 09:36

Suresh Atta

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thanks brother. I am using ajax in my project – hemant Jul 04 '13 at 07:27

score 0 · Answer 2 · answered Jul 03 '13 at 09:42

The JSP page is returned from the server as HTML page containing Javascript. The data from the server is returned only once. You can return a single string from the server with a separator, and then parse it in Client side (Javascript). You can also send data back and forth between the server and client, using some Ajax for example.

score 0 · Answer 3 · answered Jul 03 '13 at 09:45

0

You can execute jsp from your javascript function by implementing ajax method.

answered Jul 03 '13 at 09:45

vusan

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how a jsp function execute when javascript's function call?

3 Answers3