JavaScript-Provinces Cascade effect instances

Last Update:2015-04-26 Source: Internet

Author: User

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<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd" ><html><head><meta http-equiv="Content-type" Content="text/html; Charset=utf-8 "><title>Provincial Cascade Effect</title><script type="Text/javascript">     function selectcity(){        varObjprovince=document.getelementbyid ("province");varObjcity=document.getelementbyid ("City");//objcity.length=0;//Empty drop-down list optionsObjcity.options.length=0;Switch(Objprovince.value) { Case "1": Objcity.add (NewOption ("Nanjing","1"),NULL); Objcity.add (NewOption ("Suzhou","2"),NULL); Objcity.add (NewOption ("Wuxi","3"),NULL); Objcity.add (NewOption ("Nantong","4"),NULL); Break; Case "2": Objcity.add (NewOption ("Jinan","1"),NULL); Objcity.add (NewOption ("Qingdao","2"),NULL); Objcity.add (NewOption ("Sunshine","3"),NULL); Objcity.add (NewOption ("Yantai","4"),NULL); Break; Case "3": Objcity.add (NewOption ("Guangzhou","1"),NULL); Objcity.add (NewOption ("Dongguan","2"),NULL); Objcity.add (NewOption ("Shenzhen","3"),NULL); Objcity.add (NewOption ("Foshan","4"),NULL); Break; }    }</script></head><body>    <form Action= " method="post ">        <select id="province" onchange="selectcity ();" >            <option value="0">--Provinces--</option>            <option value="1">Jiangsu Province</option>              <option value="2">Shandong Province</option>                          <option value="3">Guangdong Province</option>                          <option value="4">Zhejiang Province</option>              <option value="5">Yunnan Province</option>                                          </Select>        <select id="City">            <option value="0">--City--</option>        </Select>    </form></body></html>

Arrays-Provinces and cities Cascade

<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd" ><html><head><meta http-equiv="Content-type" Content="text/html; Charset=utf-8 "><title>Arrays-Provinces and cities Cascade</title><script type="Text/javascript">    //define Province City array    varprovinces=New Array(); provinces["Jiangsu Province"]=["Nanjing","Suzhou","Xuzhou","Suqian"]; provinces["Shandong Province"]=["Jinan","Rizhao","Yantai","Qingdao"]; provinces["Zhejiang province"]=["Hangzhou City","Ningbo","Obligation City","Wenzhou"]; provinces["Guangdong province"]=["Guangzhou","Foshan","Dongguan","Zhuhai"];//Initialize province information     function init(){    varObjprovince=document.getelementbyid ("province"); for(varPinchProvinces) {Objprovince.add (NewOption (P,p),NULL); }    }//Switch Cities     function changecity(){        varObjprovince=document.getelementbyid ("province");varObjcity=document.getelementbyid ("City"); Objcity.length=0;//Mode one:/ * for (Var p in provinces) {if (P==objprovince.value) {for (Var C in province                    S[p]) {Objcity.add (new Option (provinces[p][c],provinces[p][c]), NULL); }                }            }   */          //Mode two:             for(varPinchProvinces[objprovince.value]) {Objcity.add (NewOption (Provinces[objprovince.value][p],provinces[objcity.value]),NULL); }} Window.onload=init;</script></head><body>    <form Action= " method="post ">        <select id="province" onchange="changecity ();" >            <option value="0">--Provinces--</option>        </Select>        <select id="City">            <option value="0">--City--</option>        </Select>    </form></body></html>

JavaScript-Provinces cascade effect instances

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