10/19 review

＊小考
   ．HTTP protocol was designed only for hypertext information retrieval
   ．the CSS specification gives precedence to author styles over user styles
   ．external style sheets are saved with .css extension
   ．CSS= Cascading Style Sheets
   ．CC= Creative Commom
   ．HTML= HyperText Markup Language

＊script
   ．用直譯器翻譯 翻一行執行一行
   ．較簡單

＊language
   ．用compiler翻譯 會產生object code

＊A"J"AX  --> 指得即是 javascript

＊javascript
   ．client 和 server 皆可用
   ．在clint執行即是採用client上的時間