Podcast
Questions and Answers
What is the primary purpose of HTML5 Canvas?
What is the primary purpose of HTML5 Canvas?
Which of the following is NOT a method of the 2D drawing context in HTML5 Canvas?
Which of the following is NOT a method of the 2D drawing context in HTML5 Canvas?
What is the purpose of the @keyframes rule in CSS3 Animations?
What is the purpose of the @keyframes rule in CSS3 Animations?
Which of the following is a popular CSS preprocessor?
Which of the following is a popular CSS preprocessor?
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What is the main advantage of using responsive design?
What is the main advantage of using responsive design?
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What is the primary difference between localStorage and sessionStorage in Web Storage?
What is the primary difference between localStorage and sessionStorage in Web Storage?
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What is the purpose of the srcset attribute in responsive design?
What is the purpose of the srcset attribute in responsive design?
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What is the main advantage of using Web Storage over cookies?
What is the main advantage of using Web Storage over cookies?
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Which of the following is a technique used in responsive design?
Which of the following is a technique used in responsive design?
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What is the purpose of a CSS preprocessor?
What is the purpose of a CSS preprocessor?
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Study Notes
HTML5 Basics
-
New doctype:
<!DOCTYPE html> -
New semantic elements:
- Header elements:
<header>,<nav>,<footer> - Sectioning elements:
<section>,<article>,<aside>,<figure> - Grouping elements:
<div>(replaced by semantic elements)
- Header elements:
-
Multimedia:
-
<video>and<audio>elements for native media support -
<source>element for specifying media sources
-
-
Offline storage:
- Web Storage: store data locally on the client-side (explained below)
HTML5 Canvas
- 2D drawing context: allows for dynamic, scriptable graphics
- Uses JavaScript: to manipulate and draw on the canvas
-
Methods:
-
getContext(): returns a 2D drawing context -
fillRect(),strokeRect(),clearRect(): basic drawing operations -
drawImage(): draws an image on the canvas
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CSS3 Basics
-
New selectors:
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:nth-child(),:nth-last-child(),:first-child,:last-child -
:not(),:empty,:target
-
-
New properties:
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border-radius,box-shadow,text-shadow -
background-size,background-origin -
transition,transform,animation
-
-
Gradients:
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linear-gradient(),radial-gradient() -
repeating-linear-gradient(),repeating-radial-gradient()
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CSS3 Animations
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Keyframe animations:
-
@keyframesrule defines an animation -
animationproperty applies an animation to an element
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-
Animation properties:
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animation-name,animation-duration,animation-timing-function -
animation-delay,animation-iteration-count,animation-fill-mode
-
CSS Preprocessors
-
What is a preprocessor?:
- A program that converts CSS-like code into regular CSS
- Allows for more efficient and modular coding
-
Popular preprocessors:
- Sass (Syntactically Awesome StyleSheets)
- Less (Leaner Style Sheets)
Responsive Design
- Definition: designing websites that adapt to different screen sizes and devices
-
Techniques:
- Media queries: apply different styles based on device characteristics
-
Flexible grids: use relative units (e.g.,
%,em) instead of fixed units (e.g.,px) -
Responsive images: use
srcsetattribute to provide multiple image sources
Web Storage
- Definition: a way to store data locally on the client-side
-
Types:
- localStorage: stores data with no expiration date
- sessionStorage: stores data for a single session
-
Methods:
-
setItem(),getItem(),removeItem(),clear()
-
-
Advantages:
- Faster than cookies
- More secure than cookies
- Larger storage capacity than cookies
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Description
Test your knowledge of HTML5 features, CSS3 properties and selectors, CSS preprocessors, responsive design techniques, and web storage. Covers the fundamentals of modern web development.
