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1、2.3ASP内建函数、过程、自定义函数（一）分类1、sub过程 定义：包含在sub和endsub之间的一组语句，操作结果不返回结果。它可以带参数。调用:call过程名（参数） 过程名参数 注：无参数的过程调用时必须带括号2、function过程 定义:包含在function和endsub之间的一组语句，操作结果返回variant类型值。 调用:变量=过程名(参数）vbscriptMsgbox函数：功能：弹出信息框格式：msgbox“信息框显示的内容”vbscript例1：单击按钮弹出信息窗口
测试按钮事件</titl</p><p>2、e><scriptlanguage=vbscript>subbutton1_onclick()msgbox“按钮被单击！”endsub</script></head><body><formname="form1"><inputtype="button"name="button1"value="单击"></form></body></html>vbscriptIf…then…else条件半判断语句：格式：If条件then语句Else语句Endifvbscript例2：利用条件半判断语句弹出信息窗口<html><body><scriptlanguage=v</p><p>3、bscript>value=20Ifvalue=0Thenflag=5ElseIfvalue=1Thenflag=10ElseIfvalue=2thenflag=15ElseMsgbox"数值超出范围！"EndIf</script></body></html>vbscriptSelectcase判断语句：格式：Selectcase变量case常量列表----常量列表之间用,号分隔语句case常量列表语句caseelse语句Endselectvbscript例3：显示年龄<scriptlanguage=vbscript>age=20SelectCasea</p><p>4、geCase0,1,2,3,4,5----逐一列出条件值S="幼儿"Case6,7,8,9,10,11S="儿童"Case12,13,14,15,16,17S="少年"CaseElseS="成人"EndSelectS=age&"岁是“"&S&"”啦！"document.WriteS----document浏览器对象write输出的方法</script>vbscriptDowhile循环语句：格式：Dowhile条件语句Loop注：先判断后执行vbscript例4：返回循环次数<scriptlanguage=vbscript>Dimcounter,myN</p><p>5、umcounter=0myNum=20DoWhilemyNum>10myNum=myNum-1counter=counter+1LoopMsgBox"循环重复了"&counter&"次。"</script>vbscriptDo循环语句：格式：Do语句Loopwhile条件注：先执行后判断vbscript例5：返回循环次数<scriptlanguage=vbscript>Dimcounter,myNumcounter=0myNum=9DomyNum=myNum-1counter=counter+1LoopWhilemyNum>10MsgBox"循环重复了</p><p>6、"&counter&"次。"</script>vbscriptWhile循环语句：格式：While条件语句Wend注：先判断后执行vbscript例6：返回循环次数<scriptlanguage=vbscript>Dimcounter,myNumcounter=0myNum=0WhilemyNum<10myNum=myNum+1counter=counter+1WendMsgBox"循环重复了"&counter&"次。"</script>vbscriptFor循环语句：格式：For变量=初值to终值step增量语句Nextvbscript例7：计算总和</p><p>7、<scriptlanguage=vbscript>Dimj,totalForj=2To10Step2total=total+jNextMsgBox"总和为"&total&"。"</script>vbscript例8：利用华氏温度计算摄氏温度<html><body><scriptlanguage=vbscript>Subconvert_onclick()temp=InputBox(“请输入华氏温度。”)MsgBox"温度为"&Celsius(temp)&"摄氏度。"EndSubFunctionCelsius(fDegrees)Celsius=(fDegr</p><p>8、ees-32)*5/9EndFunction</script><form><inputtype</p> </div>
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