jquery 操作select radio checkbox_www. 
 
    
        $(function () { 
            //checkbox获取选中项 
            $('#checkbox_huoqu').click(function () { 
                $('#checkbox_result_div').html(""); 
                $("#checkbox_div input[type='checkbox']:checked").each(function () { 
                    $('#checkbox_result_div').append(this.value + "  "); 
                }); 
            }); 
 
 
            //checkbox全选/取消全选 
            $('#checkbox_checkall').click(function(){ 
                $("#checkbox_div input[type='checkbox']").prop("checked",$(this).prop("checked")); 
            }); 
 
            //checkbox反选 
            $('#checkbox_fanxuan').click(function () { 
                $('#checkbox_result_div').html(""); 
                $("#checkbox_checkall").removeAttr("checked"); 
                $("#checkbox_div input[type='checkbox']").each(function () { 
                    if ($(this).prop("checked")) { 
                        $(this).removeAttr("checked"); 
                    } else { 
                        $(this).prop("checked", 'true'); 
                    } 
                }); 
            }); 
             
            //选中checkbox第2项的值 
            $('#checkbox_setvalue').click(function () { 
                 $('#checkbox_result_div').html(""); 
                 $("#checkbox_checkall").removeAttr("checked"); 
                 $("#checkbox_div input[type='checkbox']").removeAttr("checked"); 
                 $("#checkbox_div input[type='checkbox'][value='2']").prop("checked","true"); 
            }); 
           
            //获取select选中的值 
            $('#select_huoqu').click(function () { 
                $('#select_result_div').html(""); 
                var checkText=$("#select_id").find("option:selected").text(); 
                var checkValue=$("#select_id").find("option:selected").val(); //获取Select选择的Value 
                $('#select_result_div').html("select选择的text:"+checkText+" value="+checkValue); 
            }); 
             
          //选中select选中的值 
           $('#select_setvalue').click(function () { 
              $('#select_result_div').html(""); 
              $("#select_id").val(2);  
              //$("#select_id option[value='3']").prop("selected", true); //设置Select的Value值为2的项选中  
           }); 
           
         //获取radio选中的值 
           $('#radio_huoqu').click(function () { 
             $('#radio_result_div').html(""); 
             var checkValue=$("#radio_div input[type='radio']:checked").val(); //获取Select选择的Value 
             $('#radio_result_div').html("radio选择的value="+checkValue); 
           }); 
            
         //选中radio选中的值 
          $('#radio_setvalue').click(function () { 
             $('#radio_result_div').html(""); 
             $("#radio_div input[type='radio'][value='2']").prop("checked",true); 
            }); 
         });