WebFund 2013F: Assignment 1

In this assignment you are to examine, modify, and answer questions regarding the form-demo sample node application. The files of this application are also listed below.

Questions

Part A

What happens when you change the following lines from the application? Indicate the behavior if each deletion is the only change made to the application.

1. package.json: delete 7
2. app.js: delete 6, add semicolon to end of 5
3. app.js: delete 8
4. app.js: delete 17
5. app.js: delete 18
6. app.js: delete 25-27
7. app.js: delete 31
8. app.js: delete 32
9. app.js: delete 34-36
10. style.css: delete 2
11. style.css: delete 3
12. index.jade: change action="/add" to "action="/"
13. index.jade: delete 11
14. index.jade: delete 12
15. index.jade: delete ", name=name" from 7
16. index.jade: delete 8
17. index.jade: change "type=checkbox" to "type=text" on 20
18. index.jade: delete 26
19. add.jade: delete 3

Part B

Describe how to change the code to add the following features/change the following behavior. If the changes are small, specify the line(s) to changed. If the changes are more substantial, you may just list the entire modified file.

Source

package.json

{
    "name": "application-name"
  , "version": "0.0.1"
  , "private": true
  , "dependencies": {
      "express": "2.5.8"
    , "jade": ">= 0.0.1"
  }
}

app.js

/**
 * Module dependencies.
 */

var express = require('express')
  , routes = require('./routes');

var app = module.exports = express.createServer();

// Configuration

app.configure(function(){
  app.set('views', __dirname + '/views');
  app.set('view engine', 'jade');
  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(app.router);
  app.use(express.static(__dirname + '/public'));
});

app.configure('development', function(){
  app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
});

app.configure('production', function(){
  app.use(express.errorHandler());
});

// Routes

app.get('/', routes.index);
app.post('/add', routes.add);

app.listen(3010, function(){
  console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);
});

public/stylesheets/style.css

body {
  padding: 50px;
  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
}

a {
  color: #00B7FF;
}

routes/index.js

/*
 * GET home page.
 */

exports.index = function(req, res){
    res.render('index', { title: 'form demo with node and express' })
};

exports.add = function(req, res){
    res.render('add', { title: 'Person added',
			name: req.body.name,
			country: req.body.country,
			date: req.body.birthday,
			email: req.body.email});
};

views/layout.jade

!!!
html
  head
    title= title
    link(rel='stylesheet', href='/stylesheets/style.css')
  body!= body

views/index.jade

h1= title

div
  p Fill out your info
  form(method="post", action="/add")
    div
      input#name(type="text", name="name")
      label.add-on(for="name")
        | Name
    div
      input#country(type="text", name="country")
      label.add-on(for="country")
        | Country
    div
      input#birthday(type="text", name="birthday")
      label.add-on(for="birthday")
        | Birthday
    div
      label.checkbox
        input#send-email(type="checkbox", name="send-email")
        | Email Me
    div
      input#email(type="text", name="email")
      label.add-on(for="email")
        | Email
    button(type="submit") Submit

views/add.jade

h1 Info Added
p Name: #{name}
p Country: #{country}
p Date: #{date}
p Email: #{email}