A simple example for the usage of JSONP.
client.html
<html>
<head>
</head>
body>
<body>
<input type="button" id="001" onclick=gO("getCompany") value="Company" />
<input type="button" id="002" onclick=gO("getPosition") value="Position"/>
<h3>
<div id="101">
</div>
</h3>
<script type="text/javascript">
var elem=document.getElementById("101");
function gO(callback){
script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'http://localhost/test/server.php?callback='+callback;
elem.appendChild(script);
elem.removeChild(script);
}
function getCompany(data){
var message="The company you work for is "+data.company +"<img src='"+data.image+"'/ >";
elem.innerHTML=message;
}
function getPosition(data){
var message="The position you are offered is "+data.position;
elem.innerHTML=message;
}
</script>
</body>
</html>
server.php
<?php
$callback=$_GET["callback"];
echo $callback;
if($callback=='getCompany')
$response="({\"company\":\"Google\",\"image\":\"xyz.jpg\"})";
else
$response="({\"position\":\"Development Intern\"})";
echo $response;
?>
