Copyright By Free for non-commercial use. Editable provided that the copyright claim is included.

Notational Conventions For Heading Slides: Background  Hue: Red, Yellow, Green, Cyan, Blue, Magenta  as in Iris  Saturation decreases  Brightness increases Color offset to Background Font size  decreases Position  Shifted right Sideline slides are grey

Notational Conventions Unordered List Bullets Ordered by color and the bigness of colored area Font size decreases  

Built in objects

Category Native Objects Built In  String, Number, Array, Image, Date, Math User-Defined Objects. Host Objects window

global is read only and cannot be referenced. window is a member of global. window refers to global.

NaN Infinity undefined

isNaN isFinite

parseInt parseFloat

URI decodeURI decodeURIComponent encodeURI encodeUTIComponent escape unescape

encodeURI('a//: 中文 ') "a//:%20%E4%B8%AD%E6%96%87" encodeURIComponent('a//: 中文 ') "a%2F%2F%3A%20%E4%B8%AD%E6%96%87"

Escape is used for strings encodeURI(‘a 中文 ') “a%20%E4%B8%AD% E6%96%87" escape("ab._ 中文 c") "ab._%20%u4E2D%u6 587c"

constructors Boolean Number String Object Function Array

constructors Date RegExp

error Error EvalError RangeError ReferenceError SyntaxError TypeError URIError

Math JSON

eval

Object can be used as a [function] Thus a constructor.

Object alert(Object instanceof Object);//true alert(Object instanceof Function);//true alert(typeof Object); //function Object function (){[navti ve code]} Object.pr ototype Inherit{1}.prototype “Creat e”.constructor inherit Object Function.prototype.constructor

Object.prototype

Object.prototype.toString ( ) [object class]

Function’s Constructor Function function (){[navti ve code]} Object.pr ototype Inherit{1}.prototype “Create”.constructor inherit Function Function.prototype.a=1; alert(Function.a);

(A function)’s Constructor function f() { } alert(f.constructor); alert(f.constructror.constructor); alert(Function.constructor); alert(f.constructor.constructor.c onstructor); alert(f.constructor.constructor.c onstructor.constructor); Function funct ion1 function (){[navti ve code]} Object.pr ototype Inherit{1}.prototype Create.constructor inherit

Function the [[Class]] Function is a sub[[Class]] of “Object”[[Class]]

Function.prototype

Function prototype object is itself a Function object (its [[Class]] is "Function") that, when invoked, accepts any arguments and returns undefined.

Unless specified otherwise, the [[Class]] internal property of a built-in object is "Function" if that built-in object has a [[Call]] internal property, or "Object" if that built-in object does not have a [[Call]] internal property.

Function Instances

function function a() { } a=function(){} function (){} new Function() Function(…)

String var a = String("a"); var b = new String("b"); alert(typeof a);//string alert(a);//a; alert(typeof b);//object alert(b);//b

Date Date() returns a string new Date() returns an object inspect( Date() ); inspect( new Date() );

Math [[Class]] Math

Array [[Class]]:Array

Date.prototype.toString This function returns a String value. The contents of the String are implementation-dependent, but are intended to represent the Date in the current time zone in a convenient, human-readable form.

JSON contains two functions, parse and stringify, [[Class]] JSON Extensible [[Construct]] false [[Call]] false

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