Re: WebIDL 簡介（轉: Why not NodeList#forEach :\?）

衄涴跺岆怮疑賸﹝祥徹恀枙岆DOM4爵峈伅硐衄NodeList岆ArrayClassˋ峈伅HTMLCollection憩祥岆ㄗ湮講API殿隙涴跺ㄛ掀⺼getElementsByTagName/ClassName﹜Element.children脹ㄘˋ遜衄DOMStringList﹜DOMTokenList脹脹＃＃

2012/6/20 Kang-Hao (Kenny) Lu <kennyluck@w3.org>

> winter 婓 es-discuss 奻�𨯚� NodeList 𢬿衄 forEach 腔�@璃岈[1]ㄛ腕善賸狟
> 醱腔湘偶ㄩ
>
> (12/06/20 0:21), Erik Arvidsson wrote:
> > On Tue, Jun 19, 2012 at 6:42 AM, 最蛑準 <csf178@gmail.com> wrote:
> >> I guess we can try to push Web IDL to do this.
> >
> > WebIDL provides [ArrayClass] and DOM4 make NodeLists ArrayClass. This
> > means that NodeLists have Array.prototype on its prototype chain.
>
> 疑砉竭嗣���� ES5 掀廌ラ奠ㄛ�� Web IDL 掀廌祥ラ奠ㄛ想�@��辻𩂰扂參 Web IDL
> 腔諧嶱賸ㄛ�𩐠蒪�賡珨狟﹝
>
> == ���彖朣B ==
>
> 忑珂ㄛ岆 HTML �䌫譃廘� Web IDL 腔媆緊[2]岆�@畭挲腔ㄩ
>
>  # 盓堔寶掛腔妏蚚氪測燴斛�鶓例毚掁� Web IDL �䌫𦟌駔鷁譟褊��洂鰼懊䌫榲e
>  # 醱腔跪��IDL ⑵僇﹝[WEBIDL]
>
> 珩憩岆挲ㄛIDL ⑵僇岆鏡扴 JS API 腔珨意惤晟ㄛ蚚婓跪��華源ㄛ婦嬤 HTML﹜
> CSSOM﹜WebGL 脹跪���䌫榲eㄛ奧 Web IDL 岆�@意惤晟腔�䌫嵗�垀眕 "push Web
> IDL to do this" �@曆�熌プ唑c✽墅腔ㄩ鏡扴 NodeList �楤𦽴譫鷛N俴鮋腔�䌫詉�
> DOM4ㄛ𢬿煇楊蚚政衄腔 Web IDL 惤晟鏡扴�@意ロ暿腔媆緊符剒猁蜊筳 Web IDL 掛旯﹝
>
> == [ArrayClass] ==
>
> Web IDL 衄枑善 JS UA 斛���洂龢臏倛嚗𨮏�
> * 賡醱埻倰昜璃ㄗDocument﹜Window﹜NodeList 脹脹ㄘ
> * 賡醱埻倰昜璃ㄗDocument.prototype﹜Window.prototype﹜NodeList.prototype
> 脹脹ㄘ
> * ...
>
> 奧 [ArrayClass] 腔賤�冮3]⺼狟ㄩ
>
>  # 賡醱 A 腔賡醱埻倰昜璃腔��窒 [[Prototype]] 宖俶腔硉☆斛�黾境毚梤藏稹�
>  # �t腕堤ㄩ
>  #
>  # 1. �� A 眕 [NamedPropertiesObject] 晊扥宖俶哫豢ㄛ�t A 腔��窒
>  #    [[Prototype]] 宖俶腔硉鮋蚕狟醱 4.4.4 苤�𧙕阪x腔 A 腔靡想宖俶昜
>  #    璃﹝
>  # 2. 瘁�tㄛ�� A 𢬿掩哫豢餞創鍚珨��賡醱ㄛ衱�蘀橨稹� [ArrayClass] 哫豢ㄛ
>  #    �t A 腔��窒 [[Prototype]] 宖俶腔硉鮋 Array 埻倰昜璃ㄛ瘁�t鮋
>  #    Object 埻倰昜璃﹝
>  # 3. 瘁�tㄛA 腔��窒 [[Prototype]] 宖俶腔硉鮋掩餞創賡醱腔賡醱埻倰昜
>  #    璃﹝
>
> 偟珨ㄩ覜珴踢湮腔 ES5 楹莩ㄛ�@孬褫眕眻諉窣善 ES5 �式睪rray 埻倰昜璃★睿
> ☆Object 埻倰昜璃★賤�苸齡倛譟修gㄛ�汵硨鉈睻餃e﹝
> 偟媼ㄩ�@僇�𠡳��毪唑c�円��瀞}ㄛ參賡醱 A 睿賡醱 A 腔賡醱埻倰昜璃詻婓珨お﹝
> 衄鶸𧘇腔�佪奿堇��鯜銨醫e悷ㄛWeb IDL heycam 價掛奻𩂰參藩���鵴e悷腔�佷豗M
> �𧞄I蹈桶孬ㄛ垀眕衄鶸𧘇腔�𠒒奿��芤考銨癒�
> 偟ʊㄩ[ArrayClass] 腔惤楊腔楹莩憩隱緻 winter 賸﹝
>
> 垀眕�䌫螌洷盆閡� interface NodeList 腔ゴ醱衄珨��
> [ArrayClass]ㄛNodeList.prototype 腔 [[Prototype]] 憩𩂰岆
> Array.prototypeㄛ�頗廎��� NodeList �楤𣾂�𩂰衄 forEach 脹脹﹝
>
> 醴ゴ DOM4 眒�圿� interface NodeList 腔ゴ醱溫奻 [ArrayClass] 賸ㄛ�打鬌�帣
> 匙腔楹莩��𢬿衄肮祭ㄛ餙茩衄鶸𧘇腔攬衭�芤考銨癒�
>
> == 宖俶 ==
>
> 藩珨�� interface XXX 飲蹈珨虳宖俶ㄛWeb IDL �� JS �洂鰽黨竺鯙郕僆銃撙俶�
> ▲宖俶◎[4]�@��苤�罉e蹈腔�@��栳呾楊﹝［笢ㄛ價掛奻栳呾楊腔霜最憩岆ㄗ眕�@龰
> 宖俶鮋瞰ㄘㄩ
>
> 網請宖俶 getter ↙ Web IDL 宖俶 getter 祭豷 ↙ �䌫涹迮�宖俶☆�@龰★祭豷
>     ㄗES5ㄘ              ㄗWeb IDLㄘ           ㄗHTML 脹脹ㄘ
>
> ［笢ㄛ[4]腔�@��祭豷脹黺岆椙 ES 腔硉滖𡥼傖 IDL 硉ㄛ奧跪�䌫聣麵椸蒴並駔麜�
> 紱釬婓 IDL 硉奻ㄛ垀眕*燴�磮�*藩��賡醱飲褫眕蚚祥肮惤晟�洂驐洫𥛣��㵆H奻湮
> 窒煦�侀樂��� JS 衄鶸𧘇奧眒﹝
>
> �@龰祭豷笢掀廌衄靡腔憩岆 IDL 宖俶ㄞ��⺍宖俶毀扞��5�搟�
>
>  # 珨虳IDL扽俶掩隅砱蚚懂毀茬杻隅腔囀⺍扽俶﹝涴砩庤覂ㄛ絞鳳龰蜆扽俶
>  # 奀ㄛIDL扽俶斛剕殿隙囀⺍扽俶絞ゴ腔硉˙絞扢离蜆扽俶奀ㄛIDL扽俶蚚跤堤腔
>  # 硉党蜊囀⺍扽俶腔硉﹝
>
> [1] https://mail.mozilla.org/pipermail/es-discuss/2012-June/023581.html
> [2] http://www.w3.org/html/ig/zh/wiki/HTML5/infrastructure#interactive
> [3] http://www.w3.org/html/ig/zh/wiki/WebIDL#interface-prototype-object
> [4] http://www.w3.org/html/ig/zh/wiki/WebIDL#es-attributes
> [5] http://www.w3.org/html/ig/zh/wiki/HTML5/common-dom-interfaces#reflect
>
>
> 眕奻
>
> Kenny
>
>

Received on Thursday, 21 June 2012 11:53:50 UTC