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ECMA-262 中文版

摘自：http://www.ecmascript.cn

ECMA-262 中文版 ....................................................................................................................... 1

摘自：http://www.ecmascript.cn .......................................................................................... 1

介绍 ................................................................................................................................................ 16

范围 ................................................................................................................................................ 16

一致性 ............................................................................................................................................ 17

参考文献 ......................................................................................................................................... 17

概述 ................................................................................................................................................ 17

Web 脚本语言 ..................................................................................................................... 18

语言概述 ................................................................................................................................. 19

对象 ................................................................................................................................. 19

ECMAScript 的严格模式变体 ................................................................................... 20

术语定义 ................................................................................................................................. 21

类型 (type) ................................................................................................................... 21

原始值 (primitive value) .......................................................................................... 21

对象 (object) ............................................................................................................... 21

构造器 (constructor) ................................................................................................ 21

原型 (prototype) ....................................................................................................... 21

原生对象 (native object) .......................................................................................... 21

内置对象 (built-in object) ....................................................................................... 22

宿主对象 (host object) ............................................................................................. 22

未定义值 (undefined value) ................................................................................... 22

未定义类型 (Undefined type) ................................................................................. 22

空值 (null value) ........................................................................................................ 22

空类型 (Null type) ..................................................................................................... 22

布尔值 (Boolean value) ........................................................................................... 22

布尔类型 (Boolean type) ......................................................................................... 23

布尔对象 (Boolean object) ...................................................................................... 23

字符串值 (String value) ............................................................................................ 23

字符串类型 (String type) ......................................................................................... 23

字符串对象 (String object) ...................................................................................... 23

数字值 (Number value) ........................................................................................... 23

数字类型 (Number type) ......................................................................................... 24

数字对象 (Number object) ..................................................................................... 24

无穷 (Infinity) ............................................................................................................. 24

NaN ............................................................................................................................... 24

函数 (function) ........................................................................................................... 24

内置函数 (built-in function) ................................................................................... 24

属性 (property) .......................................................................................................... 24

方法 (method) ............................................................................................................ 25

内置方法 (built-in method) .................................................................................... 25

特性 (attribute) .......................................................................................................... 25

自身属性 (own property) ........................................................................................ 25

继承属性 (inherited property) ............................................................................... 25

记法约定 ......................................................................................................................................... 25

语法和词法的文法 ................................................................................................................. 25

上下文无关文法 ............................................................................................................. 25

词法和正则的文法 ......................................................................................................... 26

数字字符串文法 ............................................................................................................. 26

语法文法 ......................................................................................................................... 26

JSON 文法 .................................................................................................................... 27

文法标记法 ..................................................................................................................... 27

算法约定 ................................................................................................................................. 31

源代码文本 ..................................................................................................................................... 32

词法 ................................................................................................................................................ 34

Unicode 格式控制字符 ...................................................................................................... 35

空白字符 ................................................................................................................................. 35

行终结符 ................................................................................................................................. 36

注释 ......................................................................................................................................... 37

Tokens .................................................................................................................................. 38

标识符名和标识符 ................................................................................................................. 38

保留字 ............................................................................................................................. 40

标点符号 ................................................................................................................................. 41

字面量 ..................................................................................................................................... 42

空值字面量 ..................................................................................................................... 42

布尔值字面量 ................................................................................................................. 42

数值字面量 ..................................................................................................................... 43

字符串字面量 ................................................................................................................. 45

正则表达式字面量 ......................................................................................................... 48

自动分号插入 ......................................................................................................................... 50

自动分号插入规则 ......................................................................................................... 50

自动分号插入的例子 ..................................................................................................... 52

类型 ................................................................................................................................................ 53

Undefined 类型 .................................................................................................................. 54

Null 类型 .............................................................................................................................. 54

Boolean 类型 ...................................................................................................................... 54

String 类型 .......................................................................................................................... 54

Number 类型 ...................................................................................................................... 55

Object 类型 ......................................................................................................................... 56

Property 特性 ............................................................................................................. 56

Object 内部属性及方法 .............................................................................................. 58

引用规范类型 ......................................................................................................................... 62

GetValue(v) ................................................................................................................. 62

PutValue(v,w) ............................................................................................................. 63

列表规范类型 ......................................................................................................................... 64

完结规范类型 ......................................................................................................................... 64

属性描述符及属性标识符规范类型 ..................................................................................... 64

IsAccessorDescriptor (Desc) ................................................................................. 65

IsDataDescriptor (Desc) ......................................................................................... 65

IsGenericDescriptor (Desc) ................................................................................... 66

FromPropertyDescriptor (Desc) .......................................................................... 66

ToPropertyDescriptor (Obj) .................................................................................. 66

词法环境和环境记录项规范类型 ......................................................................................... 67

对象内部方法的算法 ............................................................................................................. 67

[[GetOwnProperty]](P) ........................................................................................... 68

[[GetProperty]] (P) ................................................................................................... 68

[[Get]] (P) .................................................................................................................... 68

[[CanPut]] (P) ............................................................................................................. 69

[[Put]] (P, V, Throw) ................................................................................................ 69

[[HasProperty]] (P) .................................................................................................. 70

[[Delete]] (P, Throw) ............................................................................................... 70

[[DefaultValue]] (hint) ............................................................................................ 70

[[DefineOwnProperty]] (P, Desc, Throw) ......................................................... 71

类型转换与测试 ............................................................................................................................. 73

ToPrimitive ......................................................................................................................... 73

ToBoolean ........................................................................................................................... 73

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