How to fetch data from backend to JS file through Suite script file using Get method

For fetching data from Backend to JS file through Suite Script using Get Method
1. After loading data from netsuite in suite script file we can fetch those records JS file through service controller file
Using Get method
in get method we have to Id of Item whose record we have to fetch
Like:

var itemId = this.request.getParameter('internalid');

Then return the data
In JS file we have add a code storing the value where are fetching from service controller
Example:

model.fetch({data:{ internalid: itemId}}).done(function (data) {
          self.result = data && data.itemDetailedData ? data.itemDetailedData : ''; 
          self.render();
  		})