Web开发基础-ASP编程课件.ppt

《Web开发基础-ASP编程课件.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Web开发基础VBScript&ASPprogramming赵刚OutlineVBScriptASPADOessentialofwebdevelopment2WhatisVBScript?VBScriptisoneof“Script”language“Script”languageislight-weightprogramminglanguageVBScriptlight-weightversionofVisualBasicVBScriptinHTMLdocument，runwhendocumentisloadedor“Trigger”byeventessentialofwebde

2、velopment3WheretouseVBScriptinHTMLdocument?document.write("HellofromVBScript!")essentialofwebdevelopment4headVbScriptfunctioninHTMLhead。Makesurefunctionsisloadedbeforeitiscalled。bodyApieceofVBScriptcode.runwh

3、enthepageisloaded。essentialofwebdevelopment5somestatementssomestatementsessentialofwebdevelopment6Variablesdimnamename=somevalueorname=somevalueoptionexplicitdimnamename=somevalueessential

4、ofwebdevelopment7essentialofwebdevelopment8SubtypeofVariant类型描述Empty未初始化的Variant，对数值变量值为0，对字符串变量值为0长度字符串Null不包含有任何有效数据的ViariantBoolean值只能是true或falseByte包含O～255之间的整数Integer包含-32768～32767之间的整数Currency包含-922337203685477～922337203685477.5807之间的数字Long包含-2147483648～2147483647之间的整数Single包含单精度浮点数，负数范围

5、从-3.402823E38到-1.401298E～45，正数范围从1.401298E～45到3.402823E38Double包含双精度浮点数，负数范围从-1.79769313486232E308到-4.94065645841247E～324，正数范围从4.94065645841247E-324到1.79769313486232E308Date包含表示日期的数字，日期范围为公元100年1月1日～公元9999年12月31日String字符串，最大字符串长度为20亿个字符Object对象子变量Error包含错误编号VBScriptOperators:Mathessentialofweb

6、development9VBScriptOperators:Comparisonessentialofwebdevelopment10VBScriptOperators:Logicessentialofwebdevelopment11VBScriptStringConcatenationOperatoressentialofwebdevelopment12Sub&functionSubmysub(argument1,argument2)somestatementsEndSub--------CallMyProc(argument)Functionmyfunction(argumen

7、t1,argument2)somestatementsmyfunction=somevalueEndFunction---name=findname()essentialofwebdevelopment13ConditionalStatementsifpayment="Cash"thenmsgbox"Youaregoingtopaycash!"elseifpayment="Visa"thenmsgbox"Youaregoingtopaywithvisa."elseif