W3C Document Object Model (DOM)-Introduction
from：http://xml.coverpages.org/dom.html#intro
TheW3CDocumentObjectModelisa"platform-andlanguage-neutralinterfacethatwillallowprogramsandscriptstodynamicallyaccessandupdatethecontent,structureandstyleofdocuments.Thedocumentcanbefurtherprocessedandtheresultsofthatprocessingcanbeincorporatedbackintothepresentedpage."
I：W3C文档对象模型是一个“与平台无关的接口，该接口允许程序和脚本动态访问和更新文档的内容、结构和风格。文档可以进一步处理，处理结果可以合并到已经显示的页面。”
"ThegoaloftheDOMgroupistodefineaprogrammaticinterfaceforXMLandHTML.TheDOMisseparatedintothreeparts:Core,HTML,andXML.TheCoreDOMprovidesalow-levelsetofobjectsthatcanrepresentanystructureddocument.WhilebyitselfthisinterfaceiscapableofrepresentinganyHTMLorXMLdocument,thecoreinterfaceisacompactandminimaldesignformanipulatingthedocument'scontents.DependingupontheDOM'susage,thecoreDOMinterfacemaynotbeconvenientorappropriateforallusers.TheHTMLandXMLspecificationsprovideadditional,higher-levelinterfacesthatareusedwiththecorespecificationtoprovideamoreconvenientviewintothedocument.Thesespecificationsconsistofobjectsandmethodsthatprovideeasierandmoredirectaccessintothespecifictypesofdocuments.KeyindustryplayersareparticipatingintheDOMWorkingGroup,includingeditorsandcontributorsfromArborText,IBM,InsoEPS,JavaSoft,Microsoft,Netscape,Novell,theObjectManagementGroup,SoftQuad,SunMicrosystems,Texcel,andW3C."TheChairoftheW3CDOMWGisLaurenWoodofSoftQuad.
I:DOM工作组的目标是定义一组XML和HTML的编程接口。DOM分为三个部分：核心、HTML和XMl。核心DOM提供了一个低级别的对象集合来表示结构化的文档，虽然这个接口本身能够代表任何HTML或者XML文档，但却能够简约、紧凑的操纵文档内容。按照DOM的用法，核心DOM接口并不适合所有用户。HTML和XML规范提供了附加的、更高级的接口，来为核心规范文档提供更方便的视图。这些规范由对象和方法组成，为访问特定类型的文档提供了更加容易和直接的访问方式。行业的主流人员都参与到DOM工作组，包括从ArborText,IBM,InsoEPS,JavaSoft,Microsoft,Netscape,Novell,theObjectManagementGroup,SoftQuad,SunMicrosystems,Texcel,andW3C来的编辑者和创始人。W3C工作组的Chair是SoftQuad的LaurenWood.
TheDOMspecification"definestheDocumentObjectModel,aplatform-andlanguage-neutralinterfacethatwillallowprogramsandscriptstodynamicallyaccessandupdatethecontent,structureandstyleofdocuments.TheDocumentObjectModelprovidesastandardsetofobjectsforrepresentingHTMLandXMLdocuments,astandardmodelofhowtheseobjectscanbecombined,andastandardinterfaceforaccessingandmanipulatingthem.VendorscansupporttheDOMasaninterfacetotheirproprietarydatastructuresandAPIs,andcontentauthorscanwritetothestandardDOMinterfacesratherthanproduct-specificAPIs,thusincreasinginteroperabilityontheWeb."
I:DOM规范定义了文档对象模型，一个与平台语言无关的接口，允许程序和脚本动态访问和更新内容、结构和文档风格。文档对象模型提供了一个标准的对象集合来表示HMML和XML文档，一个标准的怎样合并这些对象的模型，和一个用来访问和操作他们的标准接口。供应商可以把DOM作为他们专有数据结构和API的接口，也可以作为能够写标准DOM接口而不是特定API的内容,这样增强了Web操作的交互性。