1.3.4. Web Technologies Flashcards
What is HTML?
the language that web pages are written in
What does HTML do?
allows a browser to interpret and render a webpage
What is a tag in HTML?
values within angle brackets eg <h1>
What is an identifier selector?
a value that follows a hashtag
What is a class selector?
a value that follows a full stop
What is CSS?
a language like HTML, but used to describe the style of webpage
What are the names of the 2 methods of applying CSS?
- internal CSS - external CSS
Where do you write internal CSS?
inside the style tags, directly within the HTML document
Where do you write external CSS?
you write it in a seperate document, style sheet
How do you use external CSS in your HTML code?
use the <link></link> tag
What is javascript?
a language used to add interactivity on webpages
Is javascript interpreted or compiled?
interpreted
What is a search engine?
- a program that searches through a database of internet addresses, looking for a resource based on a criteria set by the user
What software does a search engine use?
web crawlers
What does a web crawler do?
- travels across the internet collecting keywords and phrases from a web page, and adds it to an index of web rescources
What is the pagerank algorithm?
the algorithm used to determine the order, when showing web results for a search engine query
What 2 factors determine a page rank?
- the number of incoming links it has from other web pages - the page rank of the web pages that link to it
What is server side processing?
when a client sends information to a server for processing
What is client side processing?
when information is processed on a local device
