浏览器缓存数据localStorage数据例子

function saveCity() {
 
     var province =$("#province").val();
     var city=$("#city").val();
     var area=$("#area").val();
 // alert("syheng"+province+"chis"+city+"ara"+area);
/*   localStorage.removeItem("province");
  localStorage.removeItem("city");
  localStorage.removeItem("area"); */
     localStorage.setItem('province', province);
     localStorage.setItem('city', city);
     localStorage.setItem('area', area);
  }

 function loadCity() { 
  var province= localStorage.getItem('province');
  var city= localStorage.getItem('city');
  var area= localStorage.getItem('area'); 
  //alert("syheng"+province+"chis"+city+"ara"+area);
  if(province!=null&&city!=null&&area!=null){
   $.ajax({  
       url:baseUrl+'/getAddressJson.json', 
       data:{
        'area':area,
        'city':city,
        'province':province
       },
       type:'post', //数据发送方式  
       async: false,
    dataType : "json",
          success: function(data){
             $("#province").empty();
             $("#city").empty();
             $("#area").empty();
             $.each( data.plist, function(index, content)
               { 
                var appendStr = "          if (content.code == province) {
          appendStr = appendStr + "selected = 'selected'";
         }
          appendStr = appendStr + ">" + content.name + ""
                      $("#province").append(appendStr);
                  
               });
            
                $.each( data.clist, function(index, content)
               { 
                var appendStr = "          if (content.code == city) {
          appendStr = appendStr + "selected = 'selected'";
         }
          appendStr = appendStr + ">" + content.name + ""
                      $("#city").append(appendStr);
                  
               });
                 $.each( data.alist, function(index, content)
               { 
                var appendStr = "          if (content.code == area) {
          appendStr = appendStr + "selected = 'selected'";
         }
          appendStr = appendStr + ">" + content.name + ""
                      $("#area").append(appendStr);
                  
               });
          }
   }); 
  }
 
 
   
 }
 loadCity();