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Infinite cascade of select statements (province | city | County | township | village | ...)

Source: Internet
Author: User
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Author: shocknet

Index. asp

Program code:
<HTML>
<Head>
<Title> </title>
<Meta content = "text/html; charset = gb2312" http-equiv = "Content-Type">
<Style type = "text/CSS"> <! --
Font {font-size: 12px}
TD {font-size: 12px}
A {color :# 333399}
A: hover {color: # ff6600}
--> </Style>
<Script language = "JavaScript" type = "text/JavaScript"> <! --
Function funonload (){
Document. All. list_file.src = "jscript_city.asp? Base = 0 & Sele = 0-& ELEM = select01 ";
}

// Pbase series, based on 0,
// Psele is the value of <Option
// Pele is the name of the form at the next level.
Function chgselect (pbase, psele, pelem ){
// After a list is changed. The value of the list after being cleared.
For (I = parseint (pelem. Replace ("select", ""); I <= 5; I ++ ){
VaR TMP = "000" + I;
VaR pelem1 = eval ("document. form1.select" + TMP. substr (TMP. Length-2 ));

Pelem1.length = 1;
Pelem1.selectedindex = 0;
}

// JS uses ASP to obtain database data to update the sublevel list
Document. All. list_file.src = "jscript_city.asp? Base = "+ pbase +" & Sele = "+ psele +" & ELEM = "+ pelem;
}

// --> </SCRIPT>
<SCRIPT id = "list_file" Language = "JavaScript" type = "text/JavaScript" src = ""> </SCRIPT>
</Head>

<Body bgcolor = "# ffffff" leftmargin = "0" topmargin = "2" text = "#333333" onLoad = "funonload ();">
<Form name = "form1">
<Select name = "select01" onchange = "chgselect (1, this. Options [This. selectedindex]. Value, 'select02')">
<Option value = ""> Save... </option>
</SELECT>
<Select name = "select02" onchange = "chgselect (2, this. Options [This. selectedindex]. Value, 'select03')">
<Option value = ""> city... </option>
</SELECT>
<Select name = "select03" onchange = "chgselect (3, this. Options [This. selectedindex]. Value, 'select04 ')">
<Option value = ""> County... </option>
</SELECT>
<Select name = "select04" onchange = "chgselect (4, this. Options [This. selectedindex]. Value, 'select05 ')">
<Option value = ""> Xiang... </option>
</SELECT>
<Select name = "select05">
<Option value = ""> village... </option>
</SELECT>
</Form>
</Body>

'Jscript _ city. asp

Program code:
<%
'Varbase drop-down menu level
'Varsele Database ID of the drop-down menu item selected
'Varelem form name next level

Varbase = request. querystring ("base ")
Varsele = left (request. querystring ("Sele"), instr (request. querystring ("Sele"), "-")-1)
Varelem = request. querystring ("ELEM ")

Vardistname = ""
Varautoid = ""

Set condb = server. Createobject ("ADODB. Connection ")
Condb. Open "driver = {Microsoft Access Driver (*. mdb)}; DBQ =" & server. mappath ("db1.mdb ")

Sqlcommand = "select * From Table1 where filed1 =" & varbase & "and filed2 =" & varsele
Set rsrecord = condb. Execute (sqlcommand)

While not rsrecord. EOF
Vardistname = vardistname & CHR (34) & rsrecord ("filed3") & CHR (34)
Varautoid = varautoid & CHR (34) & rsrecord ("ID") & CHR (34)

Rsrecord. movenext
If not rsrecord. EOF then
Vardistname = vardistname &","
Varautoid = varautoid &","
End if
Wend

Response. Write ("Var vardistname = new array (" & vardistname & ")" & vbcrlf)
Response. Write ("Var varautoid = new array (" & varautoid & ")" & vbcrlf)

Response. Write ("Var varelem = eval (" & CHR (34) & "document. form1." & varelem & CHR (34) & ")" & vbcrlf)

Response. Write ("varelem. Length = vardistname. Length + 1;" & vbcrlf)

Response. Write ("For (VAR I = 0; I <vardistname. length; I ++) {" & vbcrlf)
Response. Write ("varelem. Options [I + 1]. Text = vardistname; "& Vbcrlf)
Response. Write ("varelem. Options [I + 1]. value = varautoid+ '-' + Vardistname; "& Vbcrlf)
Response. Write ("}" & vbcrlf)

Response. Write ("varelem. selectedindex = 0;" & vbcrlf)

%>

Db1.mdb
'-------------------------------------------------
Zeng Xiaoyi village, Huang Shu, Siming, Xiamen, Fujian
Fengze Xihu water head village, Quanzhou, Fujian Province

The above five levels are converted to databases:
'-------------------------------
Id filed1 filed2 filed3
1 0 0 Fujian
2 1 Xiamen
3 1 Quanzhou
4 2 2 Siming
5 3 4 Huang Yu
6 4 5 Zeng Yi Village
7 2 3 fengze
8 3 7 West Lake
9 4 8 shuitou Village
'-------------------------------------------------
Database description:
Id automatic number
The level of the filed1 drop-down menu list. You can set its precision. Is a number)
ID of the last level of filed2 (use a long integer)
Filed3. Length depends on your situation)

This program is passed under IIS4 + win2000p + Access2000.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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