针对复选框多选后以字符串形式显示在数据库以及修改页面复选框的回显数据库

复选框的选择以及监视

function allSelect(){
    var statu=document.getElementById("all").checked;
    //alert(all.checked);
    var btns=document.getElementsByName("ids");
    for(var i=0;i<btns.length;i++){
           //alert(statu);
           btns[i].checked=statu;
           //alert(btns[i].checked);
    }
}
function checkChild(){
    var isFlag=true;
    var all=document.getElementById("all");
    var childs=document.getElementsByName("ids");
    for(var i=0;i<childs.length;i++){
        if(!childs[i].checked){
            isFlag=false;
            break;
        }
    }
    all.checked=isFlag;
}

修改复选框选择信息的回显....以便更改......

    <label for="hobby">兴&nbsp;&nbsp;&nbsp; 趣:</label>

                                   <%
                                         User user=(User)request.getSession().getAttribute("user");
                                         String hobbys=user.getHobby();
                                         String[] arr=hobbys.split(",");
                                 %>                 
                                           <input type="checkbox" value="电影" name="hobby"  <%
                                                     for(int i=0;i<arr.length;i++){
                                                              if(arr[i].equals("电影")){
                                                                  %>
                                                                  checked
                                                           <%
                                                                 break;
                                                                  }
                                                         }
                                                           %>   
                                          >电影    
                                              <input type="checkbox" value="音乐" name="hobby" <%
                                                               for(int i=0;i<arr.length;i++){
                                                                      if(arr[i].equals("音乐")){
                                                                      %>
                                                                      checked
                                                               <%
                                                                      break;
                                                                      }
                                                                      }
                                                               %>   >音乐
                                                    <input type="checkbox" value="跑步" name="hobby" <%
                                                            for(int i=0;i<arr.length;i++){
                                                                  if(arr[i].equals("跑步")){
                                                                  %>
                                                                  checked
                                                           <%
                                                                  break;
                                                                  }
                                                                  }
                                                           %>
                                                >跑步
                                           <input type="checkbox" value="旅游" name="hobby"
                                                       <%
                                                       for(int i=0;i<arr.length;i++){
                                                                 if(arr[i].equals("音乐")){
                                                                      %>
                                                                      checked
                                                               <%
                                                                      break;
                                                                      }
                                                                   }
                                                             %>
                                                               >旅游<br>