Web Development
Dr Derek BridgeSchool of Computer Science & Information Technology
University College Cork
Lecture Objectives
- learn how the module will be taught & examined
- learn what a client-server architecture is
- learn what a communications protocol, such as HTTP, is
Derek Bridge
Senior Lecturer in Computer Science
+
Artificial Intelligence researcher
Web Development I and II
| Module codes: |
CS1115/CS5002 Web Development I CS1116/CS5018 Web Development II |
|---|---|
| Credit weighting: | 5 credits each |
Module Objectives
you will acquire competence in web development
you will build a portfolio of projects
you will develop as a critical thinker/problem-solver and as an independent learner
Module Delivery
The following is correct as of August 2023 but may be subject to change.
| On-campus lectures | Tuesdays @ 12 noon, WGB 107 |
|---|---|
| Thursdays @ 3pm, WGB G05 | |
| On-campus lab | Two lab sessions — students attend the one to which they are assigned. Details TBA. |
| Private study | At least 3 hrs per week |
"Is there a book?"
There's no book.
Use the web!
especially developer.mozilla.org
"What about software?"
VSCode
(with some extensions)
Chrome web browser
Assessment: Web Development I
| Examination: | 1.5 hr in-person exam (75% of the marks) |
|---|---|
| Continuous assessment: | Web site project (25% of the marks) |
| How to fail: | Skip lectures & labs; avoid private study; cram the night before the exam; expect the exam to be a memory test |
| How to pass: | Attend lectures & labs; take notes; organize your notes; tackle the lab activities properly; expect a problem-solving exam |
Plagiarism
- Plagiarism is presenting someone else’s work as your own. It is a violation of UCC Policy and there are strict and severe penalties.
- You must read and comply with the UCC Policy on Plagiarism www.ucc.ie/en/exams/procedures-regulations/
- The Policy applies to all work submitted, including software.
- You can expect that your work will be checked for evidence of plagiarism or collusion.
- In some circumstances it may be acceptable to reuse a small amount of work by others, but only if you provide explicit acknowledgement and justification.
- If in doubt ask your module lecturer prior to submission. Better safe than sorry!
The World Wide Web
aka
The WWW
aka
The Web
The inventor
by Paul Clarke (licenced under CC BY-SA)
WWW = hypertext + the Internet
Hypertext
A hyperlink
The Internet
A network of networks
Tim Berners-Lee's Web
Evolution of the Web
- Web pages (documents)
- Web sites
- Web applications
(web apps)
Technologies
- HTML
- URL
- HTTP
- CSS
- JavaScript
- …
Client-server
Resources
Uniform Resource Locators (URL)
Every resource on the web has a unique address.
| which server | which resource on that server |
|---|---|
| www.example.org | /animals/wombats.html |
Communications Protocols
the rules of communication in computer networking
HyperText Transfer Protocol
HTTP is the protocol for web requests and responses.
The Internet Engineering Task Force (IETF) recently published HTTP/3.0.
HTTP GET Request
Request methods:
GET, POST, HEAD, PUT, DELETE,
CONNECT, OPTIONS, TRACE, PATCH
HTTP Response
HTTP Response Status Codes
| 2XX | Success | e.g. 200 OK |
| 3XX | Redirection | e.g. 301 Moved Permanently |
| 4XX | Client error |
e.g. 400 Bad Request e.g. 403 Forbidden e.g. 404 Not Found |
| 5XX | Server error | e.g. 500 Internal Server Error |