Getting started with JavaScript

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Getting started with JavaScript by Mind Map: Getting started with JavaScript

1. Data

1.1. Values

1.1.1. Value Types

1.1.1.1. object

1.1.1.2. Primitive

1.1.1.3. function

1.1.2. Primitive value (datum)

1.1.2.1. undefined

1.1.2.2. null

1.1.2.3. Boolean

1.1.2.4. number

1.1.2.4.1. Nan

1.1.2.4.2. Infinity

1.1.2.4.3. - Infinity

1.1.2.4.4. undefined

1.1.2.5. string

1.1.2.5.1. Can be delimited by either ' or "

1.1.2.5.2. Use backslash \ as escape char.

1.1.2.5.3. \uHHHH where HHHH is a 4-digit hex code.

1.1.2.5.4. Concatenate with +

1.1.3. JavaScript also defines the following built in objects

1.1.3.1. global

1.1.3.2. Object

1.1.3.3. Function

1.1.3.4. Array

1.1.3.4.1. constructing

1.1.3.4.2. Inserting into an existing array.

1.1.3.4.3. Properties

1.1.3.4.4. Methods

1.1.3.5. String

1.1.3.6. Boolean

1.1.3.7. Number

1.1.3.8. Math

1.1.3.9. Date

1.1.3.10. RegEx

1.1.3.11. JSON

1.1.3.12. Several variations of Error

2. Expression

3. Operators

3.1. Binary

3.1.1. Modulo % is a valid operator

3.1.2. Mathematical operators have normal precidence

3.2. Unary

3.2.1. typof

3.2.1.1. typeof "Hello" gives 'string'.

3.2.1.2. typeof 1.2 gives 'number'

3.2.1.3. typeof true gives 'Boolean'

3.3. Logical operators

3.3.1. ==

3.3.2. !=

3.3.3. >

3.3.4. <

3.3.5. !

3.3.6. &&

3.3.7. ||

3.4. Coalescing operators

3.5. Comparison

3.5.1. Equals (==)

3.5.2. Same (===)

4. Statements

5. Variables

5.1. Naming

5.2. Scope

5.2.1. global

5.2.1.1. If you do not use var then the variable will be created implicitly with global scope. THIS IS BAD.

5.2.2. local

6. Reserved Words / Keywords

7. Environment

7.1. In a web application, a new environment is created each time the web page is loaded .

7.2. In a Windows 8 program, an environment is created when the application starts.

8. Functions

8.1. Declaring

8.1.1. function Add(x, y) { ... }

8.1.2. var add = function(x, y) { ... }

8.2. Arguments

8.2.1. Extra arguments are discarded.

8.2.2. Missing arguments are set to 'undefined'

8.3. Browser built-in functions

8.3.1. alert

8.3.2. prompt

8.3.3. confirm

8.4. JavaScript built-in functions

8.4.1. Casting functions

8.4.1.1. Number(object)

8.4.1.2. String(object)

9. Conditional Statements

9.1. Boolean Functions

9.1.1. isNaN(object)

9.2. Flow control

9.2.1. if-else

9.2.2. switch-case

9.3. if (variable) will return true is the variable is not undefined. (NB: if it

9.4. null == undefined will evaluate as true.

9.5. Looping

9.5.1. while(expression) { ... }

9.5.2. for (int i = 0; i < max; i += increment) { ...}

9.5.3. do { ... } while (expression);

10. Error Handling

10.1. try { ... } catch(e) { /* Do something like alert(e.message) */ } finally { ... }

11. The <script> tag

11.1. type="text/javascript" is optional in HTML5

11.2. Attributes

11.2.1. async

11.2.2. defer

11.3. Wrap script code in an HTML comment

12. Accessing the DOM

12.1. NodeList

12.1.1. live NodeList

12.1.1.1. getElementByTagName(tagName)

12.1.1.2. getElemenntsByName(name)

12.1.1.3. getElementsByClass(class)

12.1.2. static NodeList

12.1.2.1. getElementById(id)

12.1.2.2. querySelector(cssSelector)

12.1.2.3. querySelectorAll(cssSelector)

12.2. Navigating the DOM

13. Events

13.1. Capturing and Bubbling

13.2. Subscribing to events

13.2.1. btn.addEventListener(eventNameAsString, callbackMethod, booleanOnCapture)

13.2.2. <a onclick="someMethod();">click</a>

13.2.3. btn.onclick = function(e) { ... };

13.3. Unsubscribing from events

13.3.1. btn.removeEventListener(eventNameAsString, callbackMethod, booleanOnCapture)

13.4. Cancelling propogation

13.4.1. function myEventHandler(e) { e.stopPropagation(); }

13.5. Preventing default operations

13.5.1. function myEventHandler(e) { e.preventDefault(); }

13.6. window Object

13.6.1. afterprint

13.6.2. beforeonload

13.6.3. beforeprint

13.6.4. blur

13.6.5. error

13.6.6. focus

13.6.7. haschange

13.6.8. load

13.6.9. message

13.6.10. offline

13.6.11. pagehide

13.6.12. pageshow

13.6.13. popstate

13.6.14. redo

13.6.15. resize

13.6.16. storage

13.6.17. undo

13.6.18. unload

13.7. Form

13.7.1. blur

13.7.2. change

13.7.3. contextmenu

13.7.4. focus

13.7.5. formchange

13.7.6. forminput

13.7.7. input

13.7.8. invalid

13.7.9. select

13.7.10. submit

13.8. Keyboard

13.8.1. keydown

13.8.2. keypress

13.8.3. keyup

13.9. Mouse

13.9.1. click

13.9.2. dblclick

13.9.3. drag

13.9.4. dragend

13.9.5. drapenter

13.9.6. drapleave

13.9.7. dragstart

13.9.8. drop

13.9.9. mousedown

13.9.10. mousemove

13.9.11. mouseout

13.9.12. mouseover

13.9.13. mouseup

13.9.14. mousewheel

13.9.15. scroll

13.10. Media

13.10.1. abort

13.10.2. canplay

13.10.3. canplaythrough

13.10.4. durationchange

13.10.5. emptied

13.10.6. ended

13.10.7. error

13.10.8. loadeddata

13.10.9. loadedmetadata

13.10.10. pause

13.10.11. play

13.10.12. playing

13.10.13. progress

13.10.14. ratechange

13.10.15. readystatechanged

13.10.16. seeked

13.10.17. seeking

13.10.18. stalled

13.10.19. suspend

13.10.20. timeupdate

13.10.21. waiting