If you need any module or (jaggery code) to reuse in jaggery, we can add a module into jaggery easily.  I will be explain how to do it in this article.

We can reuse modules from jaggery applications in each particular jaggery server. I need to add some custom new JavaScript APIs that are mainly for your applications. Modules are he best option you have.

We can write a module in javascript or java (hostobject). In the module('<jaggery-home>\modules\') you have to point out the particular file with its location. Here I am explaining how to achieve this.

[1]Create a folder with your module name inside a '<jaggery-home>\modules\' (My module is for 'phone')

Create a module.xml inside this folder. Add your module names like you see below

<module name="phone" xmlns="http://wso2.org/projects/jaggery/module.xml">
  <script>
  <name>phone</name>
  <path>scripts/phone.js</path>
  </script>
</module>

[2] Add the js file in ‘scripts’ (Phone will have type and number, we can get phone information from the object – the phone I own)

phone.js

var phone = function  (number) {
  this.type = "Apple";
  this.number = number;
  this.getInfo = getPhoneInfo;
}
 
var getPhoneInfo = function () {
  return this.number + ' is ' + this.type + ' phone';
}

[3] Now start Jaggery server, jaggery will have a javascript API for Phone that we create.  Let's try that now.

[4] Create jaggery Applications ‘testPhone’ contains ‘phone.jag’ Here is a jaggery file that I am going to use with the phone API that we created.

<%
  function getPhone(phoneNumber){
 
  var phone = require('phone');
  var myPhone = new phone.phone(phoneNumber);
  return myPhone.getInfo();
 
  }
 
  print(getPhone("94774066666"));
%>

[5] now go to http://localhost:9763/testPhone/phone.jag

[6] Now think you buy new Phone and your phone type is now changed to Nokia

<%
  function getPhone(phoneNumber){
 
  var phone = require('phone');
  var myPhone = new phone.phone(phoneNumber);
  //buy new phone
  myPhone.type = "Nokia";
  return myPhone.getInfo();
  }
 
  print(getPhone("94774066666"));
%>