1.3 Exchanging data

0.0(0)
studied byStudied by 0 people
0.0(0)
full-widthCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/20

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

21 Terms

1
New cards

<html>

All code written under this tag is in html

2
New cards

<body>

Defines the pages main text content

3
New cards

<link>

Links external files to the html e.g. CSS

4
New cards

<head>

Defines the title for the web page

5
New cards

<p>

Defines paragraphs

6
New cards

<img>

Used for images —> needs the parameters: src width: x, height: y

7
New cards

<ol>

Defines an ordered list which comes numerically or alphabetically

8
New cards

<ul>

Defines an unordered list which comes in bullet point form

9
New cards

<a>

Defines a hyperlink to a location —> href = “x”

10
New cards

<div>

Groups elements together to structure the web page

11
New cards

<script>

Embeds JavaScript into the html file

12
New cards

CSS

Cascading Style Sheet - language used to style the contents of an html file for a web page

13
New cards

2 forms of CSS

  1. Internal / embedded - CSS used in the html file under the <style> tag

  2. External - An external CSS file that is linked to the html file (<link>)

14
New cards

JavaScript

Programming language that adds interactivity to a web page

15
New cards

Advantages of JavaScript

  • Eases the load on busy servers

  • Can deal with invalid data before being sent to servers (client-side processing)

  • Reduces web traffic

16
New cards

Search engine indexing

Search engines are programs that search through databases of internet addresses for the client

Web crawlers (spiders) collect information e.g. metadata from pages and add them to the index

The crawlers travel through links on the pages

17
New cards

PageRank algorithm

Determines the order websites are displayed to the user from a user’s search

18
New cards

2 factors which determine PageRank?

  • How many links from other pages

  • The page rank of these links

19
New cards

Damping factor

Represents the probability that the user will keep clicking links

Usually set to 0.85

20
New cards

Server side processing

When a client sends data to a server usually via SQL

  • More secure

  • Can do large calculations

  • Not browser dependent

21
New cards

Client side processing

When a client processes information on a local device e.g. JavaScript

  • Immediate response from web page

  • Gives developers more control of the look of the web page