Javascriptcontains ECMAScript DOM BOM
ECMAScript:core
DOM:objectfor file
BOM:objectfor web-explorer
ECMAScript brief introduction
ECMAScriptas a core for javascript .it conclude grammar,type,Sentence,Reservedword(保留字)，keyword，Operator（操作符），object
ECMAScript new version5.0 have new function for JSON object。
ECMAScriptcompatible （兼容） mainstream（主流）explorer。
DOMbrief introduction
Documentobject model just for xml。butexpand for HTML app（applicationprogram）。
Justa api！！！（important）
domshow html as a tree
eg：
<html>
<head>love</head>//title
<body>
<p>hellomissY</p>//text
</body>
</html>
DOMhave two levels;
DOMlevel1 is a standard for w3c.
DOMlevel2 aim for
1.DOMviews:define trace different documents views api;
2.DOMEvents:define affair and how to deal affair;
3.DOMStyles:define CSS api;
4.DOMTraversal(遍历） andRange:define Traversal and Range api;
DOMLEVEL3
1.DOMLoad and Save
2.DOMValidation(DOM验证）
BOMbrief introduction
BrowserObject Model(浏览器对象模型)
dealwith explorer ex-pages.
BOMjust deal with Browser window and frame
expandedbrowser 。
summary：javascriptis a language 。talkwith Browser。canmake some Script（脚本）
ECMAScript：提供核心语言功能。providecore language function
DOM：提供访问和操作网页内容的方法和接口。provideaccess and manipulationweb
BOM：提供与浏览器交互的方法和接口。talkwith browser 。providefunction api。
due to my english is worry。so just try english to blog。