function msg() {
            $.ajax({
                url: "http://www.lingbiao.net:8082/message/querymessage",
                dataType: "json",
                type: "GET",
                async: false,
                data: {userid: getSession, isread: 1, pagenum: 1},
                success: function (data) {
                    // console.log(data.data)
                    if (data.status == 200) {
                        var service = '';
                        var blueColor='';
                        var html = '';
                        for (var i = 0; i < data.data.length; i++) {
                            //判断消息类型
                            // console.log(data.data[i].msgsendertype)
                            if (data.data[i].msgsendertype == 0) {
                                service = "系统";
                                blueColor="#65adfd";
                            } else if (data.data[i].msgsendertype == 1) {
                                service = "客服";
                                blueColor="#e52929";
                            }
                            var setDd = '<dd><s style="background-color:'+blueColor+'">' + service + '</s><time>' + data.data[i].createtime + '</time><p>' + data.data[i].content + '</p></dd>';
                            html += setDd;
                        }
                        $('.history dl').html(html);
                    }
                }
            });
        }
        msg();

1、给动态数据标签加个变量样式

<s style="background-color:'+blueColor+'">' + service + '</s>

判断状态加上颜色