Javascript實作動態選單新增的實例程式碼_javascript技巧

$(document).ready(function () { 
    //找到三個下拉框  
    var ProvinceSelect = $(".Province").child("select"); >    var CitySelect = $(".City").children("select"); 
    var AreaSelect = $(".Area").children("select"); 
  AddressSelect"); 
    //給第二個下拉框註冊事件  
    ProvinceSelect.change(function () { 
     (this ).val(); 
        //1.1只要第一個下拉框內容有變化，第三下拉方塊就要隱藏起來  
       (); 
        AddressSelect.html(""); 
        //2、若值不為空，則顯示城市下拉框                    CitySelect.html (""); 
                   $("Please Choose City").appendTo(CitySelect); 
                    switch(ProvinceValue) 
                       { 
                        //實際專案中，這個城市陣列肯定是在伺服器取得的，這裡為了簡單，我就直接自訂了一個陣列  
                                   case "HeBei ": 
                            var CityOfHeBei=["ShiJiaZhuang","CangZhou","LangFang"];  
                            for(var i=0;i                                $("" CityOfHeBei[i] "").appendTo(CitySelect); 
                                    break; 
                                 var CityOfShanDon =["JiNan","DeZhou","QingDao"];      
                🎜>                                $("" CityOfShanDon[i] "").appendTo(CitySelect); 
                   
                           與休息；                   CitySelect.parent().show();    
       🎜>        } 
    }) ; 
    // 為第二個下拉方塊註冊事件  
     CitySelect.change(function () { 
               AddressSelect.hide(); 
            AreaSelect.parent().hide();  
           != "") { 
                  AreaSelect.html(""); 🎜>     "請選擇區域").appendTo(AreaSelect); 
                        { 
                        // 實際項目中，且這個區域中的快取絕對在伺服器取得的，這裡為了足夠，我就直接自訂了一個倉庫  
                               case "石家莊": 
                     高新區","開發區","新華區"];    
                                                 $("" AreaOfCity[i] "").appendTo(AreaSelect); 
                                 中斷; 
                                 var AreaOfCity=["XinHuaQu"," YunHeQu"];       
                                                  $("" AreaOfCity[ i]「選項> ;").appendTo(AreaSelect); 
                         
                           與休息； 
  : 
                            var AreaOfCity=              for(var i=0;i                               $("                            } ； 
                        case "青島": 
    AreaOfCity=["高新區","開發區","新華區"];    
                 🎜>                              在中 $("        
                        case 「德州": 
                                                  與(var i=0;i" AreaOfCity[ i]“選項> ;").appendTo(AreaSelect); 
            
                            休息；                              var AreaOfCity=              for(var i=0;i                               $("                            } ； 
                       } 
                     AreaSelect.parent().show();  
             } else { 
                     AreaSelect.parent().hide(); 
            } 
    }); 
    AreaSelect. change(function(){ 
            var AreaValue=$(this).val(); 
         if (AreaValue!=""){ 
                $(" 地址是--省: " ProvinceSelect.val() "  城市: " CitySelect.val() "  地區: " AreaSelect.val() "").appendTo (AddressSelect); 
   .show(); 
            //alert("地址為省份: " ProvinceSelect.val() " 城市: " CitySelect.val() "                  
}) 
}); 


這裡也引用了Jquery，貌似實現了這個效果，用不用都無所謂，最近為了熟悉Jquery的用法，所以就加上了。