JavaScript省市連動

	
		
		                //function change(){
				//  ，js               
				//                  
				//var cityList = new Array();
				// js ，                 
				//                 
				//cityList['  '] = ['  ','  ','  ','  '];
				//cityList['  '] = ['  ','  ','  ','  '];
				//cityList['  '] = ['  ','  ','  ','  '];
			var city=[
	 				["  ","  ","  ","  "],
     					["  ","  ","  ","  "],
    		 			["  ","  "],
      
              			 ];
			  
     function getCity(){
         //          
         var sltProvince=document.form1.province;
         //          
         var sltCity=document.form1.city;
         
         //           
         var provinceCity=city[sltProvince.selectedIndex - 1];
 
         //       ，      
         sltCity.length=1;
 
         //                 
         for(var i=0;i<provinceCity.length;i++){
             sltCity[i+1]=new Option(provinceCity[i]);
         }
   
			//	alert(document.getElementById("province").value);
			}
		
	
	
	
	 

	
		
			         
			  
			  
			  
		
		
	
		
			        
		
		
	
	
	

 
  
  
   
     
  
   
  
  
 
  

                     //          ，               。  selectedIndex                        var city=[      ["  ","  ","  ","  "],      ["  ","  ","  ","  "],      ["  ","  ","  ","  "],      ["  ","  ","  ","  "],      ["  ","  ","  ","  "]                  ]; 
  </div> 
  <div>
         function getCity(){          //                    var sltProvince=document.form1.province;          //                    var sltCity=document.form1.city;                   //                     var provinceCity=city[sltProvince.selectedIndex - 1];            //       ，                sltCity.length=1;            //                           for(var i=0;i<provinceCity.length;i++){              sltCity[i+1]=new Option(provinceCity[i],provinceCity[i]);          }      }     
  
 
  

      
                                                                                                                                                                        
    
  
 
  
 
  

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