CS701 Module2 Assignment
General Rules for Homework Assignments
• You are strongly encouraged to add comments throughout the program. Doing
so will help your facilitator to understand your programming logic and grade you
• You must work on your assignments individually. You are not allowed to copy the
answers from the others. However, you are encouraged to discuss approaches
to the homework assignment with your facilitator.
• Each assignment has a strict deadline. However, you are still allowed to submit
your assignment within 2 days after the deadline with a penalty. 15% of the credit
will be deducted unless you made previous arrangements with your facilitator
and professor. Assignments submitted 2 days after the deadline will not be
• When the term lastName is referenced in an assignment, please replace it with
your last name.
You are strongly encouraged to add comments into your program!
Create a new folder named HW2_lastName. Write the following programs in this folder.
You decided to release the dove residing in your birdcage. But, you are keen in tracking
the flight of the bird. So, you tied a sensor tag to the poor bird and decided to write a
HTML5 application to monitor its path. Since you neither have the bird nor the sensor,
you decided to simulate the path.
Part 1 – Geolocation (30 Points)
Using the HTML5 Geolocation API, write the LocationTracker.html and the associated
The initial rendering of the HTML page is shown below with placeholders for the location
details and the Google map.
When the Start button is clicked, get the current position using the Geolocaiton API and
display the initial location in the map as shown below. After the initial location is
displayed, use the setInterval method to invoke your method updateMyLocation every 5
seconds. The Start button is disabled from now on.
The updateMyLocation method simulates the changes in the latitude and longitude as
follows. Generate two random numbers using Math.random() and divide each by 100.
These two numbers represent the changes in the latitude and longitude. Modify the
current location by adding the latitude value and subtracting the longitude value. This will
make the bird only fly in the NorthWest direction. If you are on the Northern border or the
Western border, feel free to keep the bird over the United States (or your country) by the
appropriate changes to the current location. Update the current location in the HTML and
also draw the path in the Google Map as shown in the following screencast:
Part2 – HTML5 Drag and Drop and Local Storage (40 points)
Democrat and Republican senators voting by their party lines through Drag and
The application presents a list of senators and two areas representing Democrats and
Republicans. The senators are dragged and dropped into their respective areas.
The initial list is loaded through AJAX from the partyList.xml file (provided in the
samples). Each senator is converted to a JSON object keeping track of the properties
name, party, and voted (true or false). The list of senators is then stored in local storage.
Whenever a senator is dragged and dropped into their respective area, the JSON object is
updated as voted and the list of senators is updated in the local storage. When the
application is loaded, the local storage is first checked. If the data is there, the list of
senators is loaded from the local storage, otherwise the AJAX call is made.
When the data exists in the local storage and the application is loaded, the senators
already dragged into their respective areas should also be populated. Make sure you test
Write the partyWise.html and partyWise.js for the application’s functionality.
The structure of partyList.xml is shown below.
The initial screen when the application is loaded is shown below. AJAX call is made to
load the senator list.
If the application is refreshed, the data should be loaded from the local storage:
After a few drag and drops, the application looks like this:
Note that the democrats can only be dropped into the Democrats area. Similarly for the
Republicans. You cannot drag and drop the member already voted.
If the application is quit and then reloaded, the application should resume from the last
Part3 – Web Workers and Local Storage (30 Points)
Your web application starts 5 web workers (computeWorker.js) and sends the messages
to them to compute the sum of all the integers from the specified start value to the
specified end value. The two values are send as a JSON object having start and end
properties. The web worker computes the sum of all the integers from the specified start
value to the specified end value and sends back the result. The result is sent as a JSON
object having start, end, and result properties. The main web application stores all the
results it receives in local storage.
b) Show the code for the main web application starting the workers and sending
them the messages. The values send for the five web workers can be (1, 1000),
(1001, 2000), (2001, 3000), (3001, 4000), and (4001, 5000), respectively.
c) Show how you will use local storage to record the results as they are being
received. Use a single key in the local storage and store the results received into
an array. Update the user interface as the results arrive from the workers.
Submission: Export your HW2_lastName folder as a zip file, with the
appropriate index.html for the above files, and upload the zip file to the