Intro to scripting | Information Systems homework help

Create a simple Node.js server (Save as w4_firstname_lastname.js) . Create a restful application similar to the one in lesson 4. Document the routing table, and the application you created.

Extra: Modify any JavaScript code (or the JScript assignment)  to run from Node.js command line

Submit your week 4 work in w4_firstname_lastname.txt (Please save the file as a text file and upload the text file here for final review.)

A web service is a collection protocols and standards used for exchanging data between applications or systems. Services are written in various programming languages, and running on various platforms. The following table has URI examples on how to call the services.

Routing Table 

Sr. No.

HTTP Method

URI

Operation

CRUD

1

GET

/UserService/users

Get list of users

Read

2

GET

/UserService/users/1

Get User with Id 1

Read

3

PUT

/UserService/users/2

Insert User with Id 2

Update

4

POST

/UserService/users/2

Update User with Id 2

Create

5

DELETE

/UserService/users/1

Delete User with Id 1

Delete

With ExpressJS, you can easily create a ReStful web services.

Here is an example how to create a routing table similar to the one above

/*

// This application to demo the use of restfull services

// This is the core for any MV* pattern

// let me know if you have any question

// use express server, it must be in the node_modules

save this code as wk4_myserver.js in c:ENTD261

to run this code, make sure you are on c:entd261 if not change directory to c:entd261 

>cd c:entd261

C:ENTD261>node wk4_myserver.js

once the server is running, you will get

Express server listening on port 55555

from any browser

http://localhost:55555/

*/

// setup

var express=require(“express”);

var http=require(“http”);

var app=express();

// run the server

http.createServer(app).listen(55555);

console.log(‘Express server listening on port 55555’);

// <<< here is the Model, the data storage

var products = [

         { id: 0, name: ‘watch’, description: ‘Tell time with this amazing watch’, price: 30.00 },

         { id: 1, name: ‘sandals’, description: ‘Walk in comfort with these sandals’, price: 10.00 },

         { id: 2, name: ‘sunglasses’, description: ‘Protect your eyes in style’, price: 25.00 }

];

// http://localhost:55555                             // general route

// here is the view 

app.get(“https://www.homeworkmarket.com/”, function(req,res){

  var msg=””

  msg += “<center><h1> This is the default page </h1></center>”

  msg += ” use the following <br />”

  msg += ” http://localhost:55555/hello <br />”

  msg += ” http://localhost:55555/goodbye <br />”

  msg += ” http://localhost:55555/products <br />”

  msg += ” http://localhost:55555/products/2 <br />”

  res.send(msg);

});

// <<< routes = controller

// http://localhost:55555/hello                    // welcome  route

app.get(“/hello”, function(req,res){

  res.send(“Hello ENTD261 class”);

 });

// http://localhost:55555/goodbye                       // good bye route

app.get(“/goodbye”, function(req,res){

  res.send(“Thank you ENTD261 class”);

 });

// http://localhost:55555/products                       // load and display all products

app.get(‘/products’, function(req, res) {

         res.send(JSON.stringify(products));

 });

// http://localhost:55555/products/2                    // load and display product id 2

app.get(‘/products/:id’, function(req, res) {

         if (req.params.id > (products.length – 1) || req.params.id < 0) {

                 res.statusCode = 404;

                 res.end(‘Not Found’);

         }

         res.send(JSON.stringify(products[req.params.id]));

 });

Get 20% Discount on This Paper
Pages (550 words)
Approximate price: -

Try it now!

Get 20% Discount on This Paper

We'll send you the first draft for approval by at
Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

Custom Writings Help is a Quality-Oriented Company in Online Writing as a result of hiring exceptional professionals to execute clients' tasks.

Essays

Research Papers

At Custom Writings Help,We understand the struggle of research paper writing, and that is why at Custom WritingS Help, we are all out to help you. We pride ourselves on having a team of clinical writers. The stringent and rigorous vetting process ensures that only the 'BEST' Writers are chosen for the job. We have highly qualified Ph.D. and MA writers working with us; we equally offer these experienced writers specific bonuses and incentives to make them deliver highly original, unique, and informative content at reasonably low prices.

Admissions

Thesis Writing Service

Worlwide, Many Masters Students are struggling with Thesis Completion. A thesis is likely to be the longest and most challenging piece of work a student has ever completed. However, unlike essays and other assignments, a student can pick a particular interest topic and work on their initiative. Fortunately, we are there for you. At Custom Writings Help, you are assured of an authentic, imaginative, informative, linguistically great, and advantageous thesis that adheres to all your needs. So, why continue considering different writers when you have discovered the best in the field?

Editing

Custom Papers

Not a single student can avoid writing custom papers. However, a total lack of experience, skills, and time makes it very hard to produce a superb writing piece. Therefore, if you are seeking professional help, turn to us. Our specialized and experienced writers compose a variety of model papers, including custom essays, college term papers, research papers, book reports, MBA essays, executive summaries, dissertations, Ph.D. theses, admission essays, and research proposals for college and university students at any level.

Coursework

Essay Writing

Most of the students disregard the critical principles of essay writing and compose papers below sensible guidelines. Therefore, with Custom Writings Help, one should not worry about his/her essay. Our Writers compose informative and engaging content on all complexities and topics. We write meaningful and smart essays while prioritizing all aspects that bring about a good grade, such as impeccable grammar, proper structure, zero-plagiarism, and conformance to guidelines.

Coursework

Coourse Work Writing

Don't let the seemingly never-ending onslaught of writing assignments get you down. If you are looking where to get course work assistance online, the writers at Custom Writings Help are here to assist you with all of your writing needs. We undertake to unique delivery of papers that meet the professor's requirements. The content is proofread, edited, and checked plagiarism before submission to customers. No matter how big or small your work is, we will deliver on time. Try US Now! !

Coursework

Dissertation Writing Service

High-Quality Dissertation Writing Services are rare. They require Ph.D. academicians – not easily found. However, are an exception. The years, time, and resources we have invested in the dissertation world has given us a competitive advantage over others. Choose to come to Custom Writings Help; You will find perfect Ph.D. consultants who have written hundreds of dissertations theses ready to help you. Let our dissertation-writing services help you craft your dissertation, for you are assured we will give you the results.