technology3-javascript-basics
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WOODIWISS.ME Freelance Web Developer & Lecturer in the Winchester, Hampshire area. Javascript The Basics
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WOODIWISS.MEFreelance Web Developer & Lecturer in the Winchester, Hampshire area.
JavascriptThe Basics
WOODIWISS.ME
• What is JavaScript
• JavaScript in a Browser
• Variables
• Statements
• Comments
• Data Types
• Functions
• Scope
What’s covered
WOODIWISS.ME
What is JavaScript
• Lightweight Scripting Language.
• Interpreted.
• Object Orientated.
• Prototype-based.
WOODIWISS.MEFreelance Web Developer & Lecturer in the Winchester, Hampshire area.
Easy to pick up. difficult to master.
WOODIWISS.MEWOODIWISS.ME
ECMAWhat/Who is ECMA?
• European Computer Manufacturers Association.
WOODIWISS.MEWOODIWISS.ME
ECMAWhat/Who is ECMA?
• European Computer Manufacturers Association.
• Non-profit Standards Organisation.
WOODIWISS.MEWOODIWISS.ME
ECMAWhat/Who is ECMA?
• European Computer Manufacturers Association.
• Non-profit Standards Organisation.
• Introducing ECMAScript!
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ECMAScript
JavaScript.js ActionScript.as
ECMAScript.esLanguage
Dialects
WOODIWISS.MEFreelance Web Developer & Lecturer in the Winchester, Hampshire area.
So what can javascript do?
WOODIWISS.ME
Hardware Programming
• Arduino via NodeJS framework.
• Tessel - micro-controller that runs JavaScript.
• Uniduino - gives you the power to connect the Unity game engine to Arduino.
• Control peripherals e.g. GamePads.
WOODIWISS.ME
Create Hybrid Apps
• PhoneGap - iOS, Android, Blackberry, Windows Phone & more.
• TideSDK - Windows, OSX, Linux.
• Icenieum - Windows, Web, iOS.
• Chrome Apps.
WOODIWISS.ME
Client Side• Vanilla JavaScript in a browser.
• jQuery - simplify client side scripting.
• Zepto - Lightweight jQuery alternative.
• Three.js - 3D graphics on the web.
• AngularJS - SPA framework.
• jQuery Mobile - Touch optimised.
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In the Browser
• Lets look at some Developer tools.
• Firefox - Firebug.
• Chrome - Web Developer Tools.
• Internet Explorer - Developer ToolBar.
• Opera - Dragonfly.
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Variables
• Used to store data.
• Single line style.
• Multiline.
• Typically must begin with a letter ( $ and _ are valid )
• Case sensitive.
• Over-writable - dynamic.
WOODIWISS.ME
Statements
• The end of a command.
• Tells the interpreter (browser) that your intention is finished.
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Comments
• Helpful notes.
• Good for debugging.
• Working with others.
• Don’t overuse.
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Data Types• Primary
• String
• Number
• Boolean
• Composite
• Object
• Array
• Special
• Null
• Undefined
!
• “Hello” - “” - “1984” - “TRUE”
• 19 - 19.333
• true - false
!
• var car = { myCar: “Saturn", getCar: CarTypes("Honda"), special: Sales };
• var coffees = ["French Roast", "Colombian", "Kona"];
• Special
• null, 0, false.
• undefined value.
WOODIWISS.ME
Links / Research• https://developer.mozilla.org/en-US/docs/Web/JavaScript
• https://developer.mozilla.org/en/learn/javascript
• http://www.creativebloq.com/web-design/things-you-didnt-know-javascript-could-do-6122835
• http://tessel.io/
• http://www.uniduino.com/
• https://wiki.mozilla.org/GamepadAPI
• http://www.tidesdk.org/
• http://www.icenium.com/?utm_source=html5weekly&utm_medium=banner&utm_campaign=html5weeklynewsletter&utm_content=link1
• http://developer.chrome.com/apps/about_apps.html
• http://nodejs.org/
• http://en.wikipedia.org/wiki/List_of_JavaScript_libraries
• http://mothereff.in/js-variables
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Values,_variables,_and_literals
WOODIWISS.MEFreelance Web Developer & Lecturer in the Winchester, Hampshire area.
Questions?
