ajax中的contentType使用

        //查询活跃客户
        function getActiveClient() {
            var html = ‘‘;
            $.ajax({
                url : ‘getActiveClient.json‘,
                type : "post",
                /* contentType : "application/json;charset=utf-8", */
                dataType : "json",
                async : false,
                data : {"activeClientStartTime":$("#activeClientStartTime").val(),"activeClientEndTime":$("#activeClientEndTime").val()},
                success : function(data) {
                   
                    var json = eval(data);
                    var k = 1;
                    $.each(json, function(i, item) {
                        html += ‘<tr class="active">‘;
                        html += ‘<td>‘ + k + ‘</td>‘;
                        html += ‘<td>‘ + item.clientName + ‘</td>‘;
                        html += ‘<td>‘ + item.handleNum + ‘</td>‘;
                        html += ‘<td>‘ + item.address + ‘</td>‘;
                        html += ‘</tr>‘;
                        k++;
                    });
                    
                    $("#ttable2").html(html);
                },
                error : function() {
                    $("#exportClientButton").attr("disabled","disabled");
                    alert("error");
                }
            })
        }