Creating JSONP Callbacks in JavaScript

Cross-domain requests can pose a challenge in JavaScript development. However, JSONP (JSON with Padding) provides a solution to this issue.

Modifying Your JSON API for JSONP

To enable JSONP capabilities in your JSON API, follow the simple steps below:

1. Accept a "callback" Parameter in the GET Request:

   if(array_key_exists('callback', $_GET)){

2. Wrap the Callback Function Around Your Data:

   $callback.'('.$data.');';

Using PHP as an example, the code below demonstrates these steps:

Using the JSONP Service

To utilize the JSONP service, you can employ the HTML script tag: