suitelet

NetSuite Suitelets plays vital part in integrating 3rd party web applications with the NetSuite. Writing a suitelet is as easy as writing a simple javascript except that it runs on server-side. Here is a couple of examples on how to write a suitelet. The first example creates a customer of a type LEAD-Unqualified from a POSTed web submissions.

1. Join the SuiteCloud Developer Network
To get started with Netsuite development, you'll need a Netsuite account that you can use to communicate with Netsuite. You may sign up with the SuiteCloud Developer Network (SDN) as a Community member, and get a free Netsuite account for exploitation. It may take a day or two to get your account approved.

Suitelets are extensions of SuiteScript that allow developers to write custom NetSuite pages and backend logic. Suitelets are server side scripts that operate in a request-response model. They are invoked by HTTP GET or POST requests to system generated URLs, and by default they are invoked by making a GET request from a browser.

Before beginning with SuiteScript (suitelet) development, you must enable the Server SuiteScript feature to use it and also enable Netsuite to display "Internal ID" of entities in the preferences.