how to use javascript in jsp

  • You can not call JavaScript function in if statement of JSP, because JSP is executed at the server side and JavaScript is executed at client side.

  • You have to trigger event when the one of the radio button is clicked, using onclick event you can call function corc().

  • Do not write scriptlets in JSP, because scriptlets shouldn't be used in JSPs for more than a decade. Learn the JSP EL, the JSTL, and use servlet for the Java code. How to avoid Java Code in JSP-Files?

JSP code:

.......
........
//use <form> to submit values to servlet

 <input type="radio" name="radio1" onclick="handleClick(this.id);" id="customerId" />
 <input type="radio" name="radio1" onclick="handleClick(this.id);" id="companyId" />
......
.......
//use hidden field to assign table value i.e. "customer" or "company".
 <input type="hidden" name="tableValue" id="tableTextId" />  
//</form> closing form tag

onclick event I assigned handleClick function and passed this.id, parameter this.id is used to pass the id attribute of the clicked radio button.

JavaScript code:

<script type="text/javascript">
  function handleClick(clickedId)
  {
     if(clickedId == "customerId")
       document.getElementById('tableTextId').value = "customer";
     else
       document.getElementById('tableTextId').value = "company";
  }
</script>
  • When you will submit form then in servlet you can get the value of hidden field.

String tableName = request.getParameter("tableValue"); // pass the name of hidden field i.e. tableValue

  • You can further pass this tableName to query.

Related links

Tags:

Javascript

Jsp

Recent Posts