Node.js provides different database drivers that can be added as node packages. There are packages for the MongoDB driver, the Microsoft SQL Server driver, and more. We will use the MS SQL driver for Node.js to connect with Microsoft SQL server databases. To install mssql you can run the npm install mssql –save command, or add it from the NPM package manager window, as shown in the following screenshot:
In the DataService.js file, we will add the getProducts() method, which loads the list of products from the SQL Server database.
The following is the getProducts() method, which accepts the callback function, so as soon the products list is fetched from the database, it will be passed in the callback function on the caller side:
(function(data){
data.getRecords = function (callbackFn) {
//loaded...