A Jquery way to include file

Although all server side components provide the option of including file like <jsp:include> etc, having a way to include files using clients side script can come handy if the pages are made of plain old HTML.

We provide a code for explaining how Jquery can be used to include files.

Main file:

<html>
 <head>
  <script type="text/javascript" src="/static/jquery-1.3.1.js"></script>
  <script type="text/javascript">
   //Gets called after the page is completely loaded
   $(document).ready( function() {
    //loads include page using AJAX passing parameters and executes the function after completion
    $("#include").load("incJquery.jsp", {param1:25, param2:30}, function() {
     alert("Loading include file completed!");
    });
   });
  </script>
 </head>
 <body>
  <div id="include">Loading....</div>
  Welcome to Jquery <br/>
  You see me in the main file!
 </body>
</html>

Include file:

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<h2>Am from include file, thanks to Jquery!</h2>
Value of Parameter1 is <c:out value="${param.param1}"/>
<br/>Value of Parameter1 is <c:out value="${param.param2}"/><p/>

The jquery load function basically is an AJAX call which loads the content and inserts it into the div with id=include.

The load used uses the three parameter function. The first parameter being the URL, second is data (which is basically a key/value pair object) and lastly a function. The data (key/value) gets passed to the URL as parameters. The include file can access the parameters like any GET parameters received.

Add both the files in a Java application server context. The files should be placed in same directory. Access the main file from browsers using a localhost url for going through the application server.

See the contents loaded from include file and also the parameter contents received in the include file.

Do not try to load pages from a different domain using the above script. It will not work and will provide a cross domain access error.

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