1.3.4 Web Technologies
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What is HTML?
HTML is the language/script that web pages are written in
What does HTML do?
HTML allows a browser to interpret and render a webpage
What is a tag in HTML?
HTML code is made up of tags, tags are the names given to values stored in angle brackets i.e. <h1></h1>
What is an identifier selector?
An identifier selector is a value that follows a hashtag
What is a class selector?
A class selector is a value that follows a full stop
What is CSS?
CSS is a script/language like HTML except it’s used to describe the style of a webpage
What are the names of the two methods applying CSS?
Internal/embedded CSS External CSS
Where do you write internal CSS?
It’s places inside the style tags and is entered directly within the HTML document
Where do you write external CSS?
You write it in a separate document
How do you use external CSS in your HTML code?
You use the tag
What is JavaScript?
JavaScript is a language used on webpages to add interactivity
Is JavaScript interpreted or compiled
Interpreted
What is a search engine?
A search engine is a program that searches through a database of internet addresses looking for a resource based on criteria set by the user/client
What software do search engines use?
Web Crawlers
What does a Web Crawler?
Travels across the internet collecting keywords and phrases from a web page and adding it to an index of web resources
What is a page rank algorithm?
The algorithm used to determine the order used when showing web results for a search engine query
What 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?
Server side processing is when a client sends information to a server for processing
What is client side processing?
Client side processing is when information is processed on a local device for processing