JS多級連動菜單

2019-11-21 02:20:55

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html>     <head>   <title>JS聯動下拉框</title>   <meta name="GENERATOR" content="Microsoft FrontPage 4.0">   <meta name="ProgId" content="FrontPage.Editor.Document">   <meta name="Originator" content="Microsoft Visual Studio .NET 7.1">   <script language="javascript" >   /*   **    ==================================================================================================   **    類名：CLASS_LIANDONG_YAO   **    功能：多級連動菜單   **     **    作者：YAODAYIZI   **    ==================================================================================================   **/         function CLASS_LIANDONG_YAO(array)   {    //數組，聯動的數據源       this.array=array;        this.indexName='';       this.obj='';       //設置子SELECT     // 參數：當前onchange的SELECT ID，要設置的SELECT ID       this.subSelectChange=function(selectName1,selectName2)       {       //try       //{     var obj1=document.all[selectName1];     var obj2=document.all[selectName2];     var objName=this.toString();     var me=this;        obj1.onchange=function()     {                  me.optionChange(this.options[this.selectedIndex].value,obj2.id)     }       }       //設置第一個SELECT     // 參數：indexName指選中項,selectName指select的ID       this.firstSelectChange=function(indexName,selectName)         {       this.obj=document.all[selectName];       this.indexName=indexName;       this.optionChange(this.indexName,this.obj.id)       }      // indexName指選中項,selectName指select的ID       this.optionChange=function (indexName,selectName)       {     var obj1=document.all[selectName];     var me=this;     obj1.length=0;     obj1.options[0]=new Option("請選擇",'');     for(var i=0;i<this.array.length;i++)     {                  if(this.array[i][1]==indexName)         {         //alert(this.array[i][1]+" "+indexName);       obj1.options[obj1.length]=new Option(this.array[i][2],this.array[i][0]);         }     }       }          }   </script>     </head>     <body>     <form name="form1" method="post">               <SELECT ID="s1" NAME="s1"  >     <OPTION selected></OPTION>       </SELECT>       <SELECT ID="s2" NAME="s2"  >     <OPTION selected></OPTION>       </SELECT>       <SELECT ID="s3" NAME="s3">     <OPTION selected></OPTION>       </SELECT>                     <SELECT ID="x1" NAME="x1"  >     <OPTION selected></OPTION>       </SELECT>       <SELECT ID="x2" NAME="x2"  >     <OPTION selected></OPTION>       </SELECT>       <SELECT ID="x3" NAME="x3">     <OPTION selected></OPTION>       </SELECT>       <SELECT ID="x4" NAME="x4">     <OPTION selected></OPTION>       </SELECT>       <SELECT ID="x5" NAME="x5">     <OPTION selected></OPTION>       </SELECT>          </form>     </body>               <script language="javascript">     //例子1-------------------------------------------------------------     //數據源   var array=new Array();   array[0]=new Array("華南地區","根目錄","華南地區"); //數據格式 ID，父級ID，名稱   array[1]=new Array("華北地區","根目錄","華北地區");   array[2]=new Array("上海","華南地區","上海");   array[3]=new Array("廣東","華南地區","廣東");   array[4]=new Array("徐家匯","上海","徐家匯");   array[5]=new Array("普托","上海","普托");       array[6]=new Array("廣州","廣東","廣州");   array[7]=new Array("湛江","廣東","湛江");   //--------------------------------------------   //這是調用代碼   var liandong=new CLASS_LIANDONG_YAO(array) //設置數據源   liandong.firstSelectChange("根目錄","s1"); //設置第一個選擇框   liandong.subSelectChange("s1","s2"); //設置子級選擇框   liandong.subSelectChange("s2","s3");           //例子2-------------------------------------------------------------     //數據源       var array2=new Array();//數據格式 ID，父級ID，名稱   array2[0]=new Array("測試測試","根目錄","測試測試");    array2[1]=new Array("華北地區","根目錄","華北地區");   array2[2]=new Array("上海","測試測試","上海");   array2[3]=new Array("廣東","測試測試","廣東");   array2[4]=new Array("徐家匯","上海","徐家匯");   array2[5]=new Array("普托","上海","普托");       array2[6]=new Array("廣州","廣東","廣州");   array2[7]=new Array("湛江","廣東","湛江");   array2[8]=new Array("不知道","湛江","不知道");   array2[9]=new Array("5555","湛江","555");   array2[10]=new Array("++++","不知道","++++");   array2[11]=new Array("111","徐家匯","111");   array2[12]=new Array("222","111","222");   array2[13]=new Array("333","222","333");   //--------------------------------------------   //這是調用代碼   //設置數據源   var liandong2=new CLASS_LIANDONG_YAO(array2);   //設置第一個選擇框   liandong2.firstSelectChange("根目錄","x1");   //設置子選擇框   liandong2.subSelectChange("x1","x2")   liandong2.subSelectChange("x2","x3")   liandong2.subSelectChange("x3","x4")   liandong2.subSelectChange("x4","x5")     </script> </html>

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