Javascript技术技巧大全（五）
2018-10-15 17:27
//POST代替FORM
<SCRIPTlanguage=VBScript>
FunctionURLEncoding(vstrIn)
strReturn=
Fori=1ToLen(vstrIn)
ThisChr=Mid(vStrIn,i,1)
IfAbs(Asc(ThisChr))<&HFFThen
strReturn=strReturn&ThisChr
Else
innerCode=Asc(ThisChr)
IfinnerCode<0Then
innerCode=innerCode+&H10000
EndIf
Hight8=(innerCodeAnd&HFF00)&HFF
Low8=innerCodeAnd&HFF
strReturn=strReturn&%&Hex(Hight8)&%&Hex(Low8)
EndIf
Next
URLEncoding=strReturn
EndFunction
Functionbytes2BSTR(vIn)
strReturn=
Fori=1ToLenB(vIn)
ThisCharCode=AscB(MidB(vIn,i,1))
IfThisCharCode<&H80Then
strReturn=strReturn&Chr(ThisCharCode)
Else
NextCharCode=AscB(MidB(vIn,i+1,1))
strReturn=strReturn&Chr(CLng(ThisCharCode)*&H100+CInt(NextCharCode))
i=i+1
EndIf
Next
bytes2BSTR=strReturn
EndFunction
dimstrA,oReq
strA=URLEncoding(submit1=Submit&text1=中文)
setoReq=CreateObject(MSXML2.XMLHTTP)
oReq.openPOST,
oReq.setRequestHeaderContent-Length,Len(strA)
oReq.setRequestHeaderCONTENT-TYPE,application/x-
oReq.sendstrA
msgboxbytes2BSTR(oReq.responseBody)
</SCRIPT>
//readyState是xmlhttp返回数据的进度，0=载入中,1=未初始化,2=已载入,3=运行中,4=完成
//组件是否安装
isComponentInstalled({6B053A4B-A7EC-4D3D-4567-B8FF8A1A5739},componentID))
//检查网页是否存在
functionCheckURL(URL)
{
varxmlhttp=newActiveXObject(Microsoft.XMLHTTP);
xmlhttp.Open(GET,URL,false);
try
{
xmlhttp.Send();
varresult=xmlhttp.status;
}
catch(e){return(false);}
if(result==200)
{
returntrue;
}
xmlhttp=null;
returnfalse;
}
//连接数据库
<scriptlanguage=javascript>
//用JavaScript写服务器端连接数据库的代码示例
conn.Open(Provider=SQLOLEDB.1;DataSource=localhost;UserID=sa;
+Password=;InitialCatalog=pubs);
varrs=newActiveXObject(ADODB.Recordset);
varsql=select*fromauthors;
rs.open(sql,conn);
shtml=<tablewidth=100%border=1>;
shtml+=<trbgcolor=#f4f4f4><td>au_id</td><td>au_lname</td><td>au_fname</td><td>phone</td><td>address</td><td>city</td><td>state</td><td>zip</td></tr>;
while(!rs.EOF)
{
shtml+=<tr><td>+rs(au_id)+</td><td>+rs(au_lname)+</td><td>+rs(au_fname)+</td><td>+rs(phone)+</td><td>+rs(address)+</td><td>+rs(city)+</td><td>+rs(state)+</td><td>+rs(zip)+</td></tr>;
rs.moveNext;
}
shtml+=</table>;
document.write(shtml);
rs.close();
rs=null;
conn.close();
conn=null;
</script>
//使用数据岛
<html>
<body>
srno：<inputtype=textdatasrc=#xmldateDataFLD=srnosize=76><BR>
times：<inputtype=textdatasrc=#xmldateDataFLD=timessize=76><BR>
<inputid=firstTYPE=buttonvalue=<< 第一条记录onclick=xmldate.recordset.moveFirst()>
<inputid=prevTYPE=buttonvalue=<上一条记录onclick=xmldate.recordset.movePrevious()>
<inputid=nextTYPE=buttonvalue=下一条记录>onclick=xmldate.recordset.moveNext()>
<inputid=lastTYPE=buttonvalue=最后一条记录>>onclick=xmldate.recordset.moveLast()>
<inputid=AddTYPE=buttonvalue=添加新记录onclick=xmldate.recordset.addNew()>
<XMLID=xmldate>
<infolist>
<info><srno>20041025-01</srno><times>null</times></info>
<info><srno>20041101-09</srno><times>2004年10月1日2点22分0秒</times></info>
</infolist>
</XML>
</body>
</html>
//获得参数
<body>
<ahref=javascript:location.href=location.href+?a=1&b=2>search</a>
<scriptlanguage=JavaScript>
<!--
vara=location.search.substr(1);
if(a.length>0)
{
varre=/([^&]*?)=([^&]*)/g
vars=a.match(re);
for(vari=0;i<s.length;i++)
{
alert(s[i]);
alert(s[i].split(=)[1]);
}
}
//-->
</script>
</body>
//可编辑SELECT
<inputtype=textname=re_namestyle=width:100px;height:21px;font-size:10pt;><spanstyle=width:18px;border:0pxsolidred;><selectname=r00style=margin-left:-100px;width:118px;background-color:#FFEEEE;onChange=document.all.re_name.value=this.value;>
<optionvalue=1>11111111<option>
<optionvalue=2>222222</option>
<optionvalue=3>333333</option>
</select>
</span>