SOURCE

// - - - - - - - 疫情实时数据 - - - - - - //
let dom = $('#bar');
let rel_chart = echarts.init(document.getElementById('bar'));
let option = {};
var mapData = [];
var mapChart;

function formatDate(now) {
    var year = now.getFullYear();  //取得4位数的年份
    var month = now.getMonth() + 1;  //取得日期中的月份，其中0表示1月，11表示12月
    var date = now.getDate();      //返回日期月份中的天数（1到31）
    var hour = now.getHours();     //返回日期中的小时数（0到23）
    var minute = now.getMinutes(); //返回日期中的分钟数（0到59）
    var second = now.getSeconds(); //返回日期中的秒数（0到59）
    return year + "-" + getzf(month) + "-" + getzf(date) + " " + getzf(hour) + ":" + getzf(minute) + ":" + getzf(second);
}

//补0操作
function getzf(num) {
    if (parseInt(num) < 10) {
        num = '0' + num;
    }
    return num;
}

function getTotalData() {
    let url = 'http://api.tianapi.com/txapi/ncov/index?key=698891ce03c51780f3433fa08e1b56d1';
    $.get(url, res => {
        if (res && res.code == 200) {
            // console.log(res.newslist[0])
            let desc = res.newslist[0].desc;
            $('#qzbl').html(desc.confirmedCount);
            $('#qzbl_pre').html(desc.confirmedIncr == undefined ? '待更新' :'+' + desc.confirmedIncr);
            $('#ysbl').html(desc.suspectedCount);
            $('#ysbl_pre').html(desc.suspectedIncr == undefined ? '待更新' : '+' + desc.suspectedIncr);
            $('#zybl').html(desc.curedCount);
            $('#zybl_pre').html(desc.curedIncr == undefined ? '待更新' : '+' + desc.curedIncr);
            $('#swbl').html(desc.deadCount);
            $('#swbl_pre').html(desc.deadIncr == undefined ? '待更新' : '+' + desc.deadIncr);
            $('#updateTime').html('数据更新至 ' + formatDate(new Date(desc.modifyTime)));

            $('#remark ul').html('');
            // $('#remark ul').append(`<li>${desc.countRemark}</li>`);
            $('#remark ul').append(`<li>${desc.note1}</li>`);
            $('#remark ul').append(`<li>${desc.note2}</li>`);
            $('#remark ul').append(`<li>${desc.note3}</li>`);
            $('#remark ul').append(`<li>${desc.generalRemark}</li>`);
        }
    })
}

function getBarData() {
    let url = 'http://api.tianapi.com/txapi/ncovcity/index?key=698891ce03c51780f3433fa08e1b56d1';
    $.get(url, res => {
        if (res && res.code == 200) {
            // console.log(res);
            let list = res.newslist;

            let provinces = [];
            let confirm = [];
            let cured = [];
            let suspected = [];
            let dead = []

            list = list.sort((a, b) => {
                return b.confirmedCount - a.confirmedCount
            });
            list.forEach(d => {
                // console.log(d);
                provinces.push(d.provinceShortName);
                confirm.push(d.confirmedCount);
                cured.push(d.curedCount);
                suspected.push(d.suspectedCount);
                dead.push(d.deadCount);
                $('#city_sel').append(`<option value='${d.provinceShortName}'>${d.provinceShortName}</option>`)
            });

            option = {
                color: ['#4cabce', '#e5323e', '#003366', '#006699'],
                tooltip: {
                    trigger: 'axis',
                    axisPointer: {            // 坐标轴指示器，坐标轴触发有效
                        type: 'shadow'        // 默认为直线，可选为：'line' |
                    }
                },
                // grid: {
                //     left: '3%',
                //     right: '6%',
                //     bottom: '3%',
                //     containLabel: true
                // },
                xAxis: [
                    {
                        type: 'category',
                        data: provinces,
                        axisLabel: {
                            interval:0,
                            formatter: function (value) {
                                return value.split("").join("\n");
                            }
                        }
                    }
                ],
                yAxis: [
                    {
                        type: 'value'
                    }

                ],
                series: [
                    {
                        name: '确诊',
                        type: 'bar',
                        data: confirm
                    },
                    // {
                    //       name: '疑似',
                    //       type: 'bar',
                    //       data: suspected
                    //   },

                    {
                        name: '死亡',
                        type: 'bar',
                        data: dead
                    },

                    {
                        name: '治愈',
                        type: 'bar',
                        data: cured
                    },
                ]
            };

            rel_chart.setOption(option);
        }
    })
}

$('#refresh').on('click', () => {
    $('.total span').html('刷新中');
    $('select').val('全国');
    getBarData();
})

function jumpCity(val) {
    if (val == '全国') {
        getBarData();
        return
    }
    let url = 'http://api.tianapi.com/txapi/ncovcity/index?key=698891ce03c51780f3433fa08e1b56d1';
    $.get(url, res => {
        if (res && res.code == 200) {
            let news = res.newslist;

            let cities = [];

            let axios = [];
            let confirm = [];
            let cured = [];
            let suspected = [];
            let dead = []

            let total = 0;
            news.forEach(d => {
                if (d.provinceShortName == val) {
                    cities = d.cities
                }
            });
            cities.forEach(d => {
                axios.push(d.cityName);
                confirm.push(d.confirmedCount);
                cured.push(d.curedCount);
                dead.push(d.deadCount);
                total += d.confirmedCount;
            });
            $('.total span').html('确诊总数 ' + total);
            option = {
                color: ['#4cabce', '#e5323e', '#003366', '#006699'],
                tooltip: {
                    trigger: 'axis',
                    axisPointer: {            // 坐标轴指示器，坐标轴触发有效
                        type: 'shadow'        // 默认为直线，可选为：'line' |
                    }
                },
                // grid: {
                //     left: '3%',
                //     right: '6%',
                //     bottom: '3%',
                //     containLabel: true
                // },
                xAxis: [
                    {
                        type: 'category',
                        data: axios,
                        axisLabel: {
                            interval:0,
                            formatter: function (value) {
                                return value.split("").join("\n");
                            }
                        }
                    }
                ],
                yAxis: [
                    {
                        type: 'value'
                    }
                ],
                series: [
                    {
                        name: '确诊',
                        type: 'bar',
                        data: confirm
                    },
                    // {
                    //       name: '疑似',
                    //       type: 'bar',
                    //       data: suspected
                    //   },

                    {
                        name: '死亡',
                        type: 'bar',
                        data: dead
                    },

                    {
                        name: '治愈',
                        type: 'bar',
                        data: cured
                    },
                ]
            };

            rel_chart.setOption(option);
        }
    })
}

getTotalData();
getBarData();

// - - - - - - - 武汉人员迁徙到各地 - - - - - - //
var units = "%";
var margin = { top: 10, right: 10, bottom: 10, left: 10 },
    width = 800 - margin.left - margin.right,
    height = 1400 - margin.top - margin.bottom;

var formatNumber = d3.format(",.2f"),    // zero decimal places
    format = function (d) {
        return formatNumber(d) + " " + units;
    },
    color = d3.scale.category20();

// append the svg canvas to the page
var svg = d3.select("#chart").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
    .append("g")
    .attr("transform",
        "translate(" + margin.left + "," + margin.top + ")");

// Set the sankey diagram properties
var sankey = d3.sankey()
    .nodeWidth(36)
    .nodePadding(10)
    .size([width, height]);

var path = sankey.link();

//时间格式化问题
Date.prototype.Format = function (fmt) {
    var o = {
        "M+": this.getMonth() + 1, //月份
        "d+": this.getDate(), //日
        "H+": this.getHours(), //小时
        "m+": this.getMinutes(), //分
        "s+": this.getSeconds(), //秒
        "q+": Math.floor((this.getMonth() + 3) / 3), //季度
        "S": this.getMilliseconds() //毫秒
    };
    if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    for (var k in o)
        if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
    return fmt;
};

/**
 * 取前几天日期.
 * @param day 天数
 */
function getPreData(day) {
    var preDate = new Date(new Date().getTime() - 24 * 60 * 60 * 1000 * day);
    return preDate.Format("yyyyMMdd");
}

/**
 * 初始化日期下拉框.
 */
function initDateSelect() {
    var flag = true,
        i = 1;
    while (flag) {
        var date = getPreData(i);
        i++;
        $('#date_sel').append(`<option value=${date}>${date}</option>`)
        if (date == '20200120') {
            flag = false;
        }
    }
}

function dateChange(date) {
    loadData(date);
    renderSankey();
}

// 前一天日期
var preDate = getPreData(1);

function loadData(date) {
    var url = "http://huiyan.baidu.com/migration/cityrank.jsonp?dt=city&id=420100&type=move_out&date=" + date;
    // load the data
    $.ajax({
        url: url,
        dataType: "jsonp",
        jsonp: 'cb'
    });
}

initDateSelect();
loadData(preDate);

var graph = {};

/**
 * 回调函数
 */
function cb(data) {
    if (data.errmsg == 'SUCCESS') {
        var datalist = data.data.list;
        var nodeArr = [];
        var linkArr = [];
        var provinceMap = new Map();
        nodeArr.push({'name':'武汉'});
        datalist.forEach(function (d, i) {
            // console.info(d);
            var city = d['city_name'];
            var province = d['province_name'];
            var val = d['value'];
            if(provinceMap.get(province) == null) {
                nodeArr.push({ 'name': province });
                provinceMap.set(province, val);
            } else {
                provinceMap.set(province, provinceMap.get(province) + val);
            }

            // 直辖市名称特殊处理，否则出现页面死循环
            if (province == city) {
                var c = city + " ";
                nodeArr.push({ 'name': c });
                linkArr.push({ 'source': province, 'target': c, 'value': d['value'] });
            } else {
                nodeArr.push({ 'name': city });
                linkArr.push({ 'source': province, 'target': city, 'value': d['value'] });
            }
            // linkArr.push({ 'source': province, 'target': city, 'value': d['value'] });
        });

        // 遍历省数据
        provinceMap.forEach((v, k) =>{
            linkArr.push({ 'source': '武汉', 'target': k, 'value': v });
        });

        // console.info(nodeArr);
        // console.info(linkArr);
        graph.nodes = nodeArr;
        graph.links = linkArr;

        renderSankey();
    }

}

function renderSankey() {
    var nodeMap = {};
    graph.nodes.forEach(function (x) { nodeMap[x.name] = x; });
    graph.links = graph.links.map(function (x) {
        return {
            source: nodeMap[x.source],
            target: nodeMap[x.target],
            value: x.value
        };
    });

    sankey
        .nodes(graph.nodes)
        .links(graph.links)
        .layout(32);

    $($('#chart svg').children().get(0)).empty();

    // add in the links
    var link = svg.append("g").selectAll(".link")
        .data(graph.links)
        .enter().append("path")
        .attr("class", "link")
        .attr("d", path)
        .style("stroke-width", function (d) { return Math.max(1, d.dy); })
        .sort(function (a, b) { return b.dy - a.dy; });

    // add the link titles
    link.append("title")
        .text(function (d) {
            return d.source.name + " → " +
                d.target.name + "\n" + format(d.value);
        });

    // add in the nodes
    var node = svg.append("g").selectAll(".node")
        .data(graph.nodes)
        .enter().append("g")
        .attr("class", "node")
        .attr("transform", function (d) {
            return "translate(" + d.x + "," + d.y + ")";
        })
        .call(d3.behavior.drag()
            .origin(function (d) { return d; })
            .on("dragstart", function () {
                this.parentNode.appendChild(this);
            })
            .on("drag", dragmove));

    // add the rectangles for the nodes
    node.append("rect")
        .attr("height", function (d) {
            return d.dy;
        })
        .attr("width", sankey.nodeWidth())
        .style("fill", function (d) {
            return d.color = color(d.name.replace(/ .*/, ""));
        })
        .style("stroke", function (d) {
            return d3.rgb(d.color).darker(2);
        })
        .append("title")
        .text(function (d) {
            return d.name + "\n" + format(d.value);
        });

    // add in the title for the nodes
    node.append("text")
        .attr("x", -6)
        .attr("y", function (d) { return d.dy / 2; })
        .attr("dy", ".35em")
        .attr("text-anchor", "end")
        .attr("transform", null)
        .text(function (d) { return d.name; })
        .filter(function (d) { return d.x < width / 2; })
        .attr("x", 6 + sankey.nodeWidth())
        .attr("text-anchor", "start");

    // the function for moving the nodes
    function dragmove(d) {
        d3.select(this).attr("transform",
            "translate(" + d.x + "," + (
                d.y = Math.max(0, Math.min(height - d.dy, d3.event.y))
            ) + ")");
        sankey.relayout();
        link.attr("d", path);
    }

    // 美化线条
    d3.selectAll('#chart svg path.link')
        .style('stroke', function (d) {
            return d.source.color;
        })
}

// - - - - - - - 各省确诊历史图 - - - - - //
/**
 * 各省确认人数历史记录.
 * @type {({date: number, val: number, category: string})[]}
 */
var his_data = [
    {
        "key": "湖北",
        "values": [['2020-01-20', 270], ['2020-01-21', 375], ['2020-01-22', 444], ['2020-01-23', 549], ['2020-01-24', 729], ['2020-01-25', 1052], ['2020-01-26', 1423], ['2020-01-27', 2714], ['2020-01-28', 3554], ['2020-01-29', 4586], ['2020-01-30', 4586], ['2020-01-31', 5806], ['2020-02-01', 7153], ['2020-02-02', 9074], ['2020-02-03', 11177], ['2020-02-04', 13522], ['2020-02-05', 16678], ['2020-02-06', 19665], ['2020-02-07', 22112], ['2020-02-08', 24953], ['2020-02-09', 27100], ['2020-02-10', 29631], ['2020-02-11',31728], ['2020-02-12',33366], ['2020-02-13',48206], ['2020-02-14',51986], ['2020-02-15',54406],["2020-02-16",56249],["2020-02-17",58182],["2020-02-18",59989],["2020-02-19",61682],["2020-02-20",62031],["2020-02-21",62662],["2020-02-22",63454],["2020-02-23",64084],["2020-02-24",64287],["2020-02-25",64786]]
    },
    {
        "key": "广东",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 53 ],['2020-01-23', 78 ],['2020-01-24', 98 ],['2020-01-25', 133 ],['2020-01-26', 146 ],['2020-01-27', 207 ],['2020-01-28', 241 ],['2020-01-29', 311 ],['2020-01-30', 354 ],['2020-01-31', 393 ],['2020-02-01', 535 ], ['2020-02-02', 632], ['2020-02-03', 725], ['2020-02-04', 813], ['2020-02-05', 895], ['2020-02-06', 970], ['2020-02-07', 1034], ['2020-02-08', 1095], ['2020-02-09', 1131], ['2020-02-10', 1159], ['2020-02-11',1177], ['2020-02-12', 1219], ['2020-02-13',1241], ['2020-02-14',1261], ['2020-02-15',1294],["2020-02-16",1316],["2020-02-17",1322],["2020-02-18",1328],["2020-02-19",1331],["2020-02-20",1332],["2020-02-21",1333],["2020-02-22",1339],["2020-02-23",1342],["2020-02-24",1345],["2020-02-25",1347]]
    },
    {
        "key": "浙江",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 26 ],['2020-01-23', 43 ],['2020-01-24', 62 ],['2020-01-25', 104 ],['2020-01-26', 128 ],['2020-01-27', 173 ],['2020-01-28', 296 ],['2020-01-29', 428 ],['2020-01-30', 428 ],['2020-01-31', 537 ],['2020-02-01', 599 ], ['2020-02-02', 661], ['2020-02-03', 724], ['2020-02-04', 829], ['2020-02-05', 895], ['2020-02-06', 954], ['2020-02-07', 1006], ['2020-02-08', 1048], ['2020-02-09', 1075], ['2020-02-10', 1092], ['2020-02-11',1117], ['2020-02-12', 1131], ['2020-02-13',1145], ['2020-02-14',1155], ['2020-02-15',1162],["2020-02-16",1167],["2020-02-17",1171],["2020-02-18",1172],["2020-02-19",1174],["2020-02-20",1175],["2020-02-21",1203],["2020-02-22",1205],["2020-02-23",1205],["2020-02-24",1205],["2020-02-25",1205]]
    },
    {
        "key": "河南",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 0 ],['2020-01-23', 9 ],['2020-01-24', 32 ],['2020-01-25', 83 ],['2020-01-26', 128 ],['2020-01-27', 168 ],['2020-01-28', 206 ],['2020-01-29', 278 ],['2020-01-30', 278 ],['2020-01-31', 352 ],['2020-02-01', 422 ], ['2020-02-02', 493], ['2020-02-03', 566], ['2020-02-04', 675], ['2020-02-05', 764], ['2020-02-06', 851], ['2020-02-07', 914], ['2020-02-08', 981], ['2020-02-09', 1033], ['2020-02-10', 1073], ['2020-02-11',1105], ['2020-02-12', 1135], ['2020-02-13',1169], ['2020-02-14',1184], ['2020-02-15',1212],["2020-02-16",1231],["2020-02-17",1246],["2020-02-18",1257],["2020-02-19",1262],["2020-02-20",1265],["2020-02-21",1267],["2020-02-22",1270],["2020-02-23",1271],["2020-02-24",1271],["2020-02-25",1271]]
    },
    {
        "key": "重庆",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 9 ],['2020-01-23', 27 ],['2020-01-24', 57 ],['2020-01-25', 75 ],['2020-01-26', 110 ],['2020-01-27', 132 ],['2020-01-28', 147 ],['2020-01-29', 165 ],['2020-01-30', 182 ],['2020-01-31', 206 ],['2020-02-01', 247 ], ['2020-02-02', 275], ['2020-02-03', 312], ['2020-02-04', 344], ['2020-02-05', 376], ['2020-02-06', 400], ['2020-02-07', 415], ['2020-02-08', 428], ['2020-02-09', 450], ['2020-02-10', 473], ['2020-02-11',489], ['2020-02-12', 509], ['2020-02-13',525], ['2020-02-14',532], ['2020-02-15',538],["2020-02-16",547],["2020-02-17",552],["2020-02-18",553],["2020-02-19",555],["2020-02-20",560],["2020-02-21",567],["2020-02-22",572],["2020-02-23",573],["2020-02-24",575],["2020-02-25",576]]
    },
    {
        "key": "湖南",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 9 ],['2020-01-23', 24 ],['2020-01-24', 43 ],['2020-01-25', 69 ],['2020-01-26', 100 ],['2020-01-27', 143 ],['2020-01-28', 221 ],['2020-01-29', 277 ],['2020-01-30', 277 ],['2020-01-31', 332 ],['2020-02-01', 389 ], ['2020-02-02', 463], ['2020-02-03', 521], ['2020-02-04', 593], ['2020-02-05', 661], ['2020-02-06', 711], ['2020-02-07', 772], ['2020-02-08', 803], ['2020-02-09', 838], ['2020-02-10', 879], ['2020-02-11',912], ['2020-02-12', 946], ['2020-02-13',968], ['2020-02-14',988], ['2020-02-15',1001],["2020-02-16",1004],["2020-02-17",1006],["2020-02-18",1007],["2020-02-19",1008],["2020-02-20",1010],["2020-02-21",1011],["2020-02-22",1013],["2020-02-23",1016],["2020-02-24",1016],["2020-02-25",1016]]
    },
    {
        "key": "山东",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 0 ],['2020-01-23', 21 ],['2020-01-24', 46 ],['2020-01-25', 63 ],['2020-01-26', 75 ],['2020-01-27', 95 ],['2020-01-28', 121 ],['2020-01-29', 145 ],['2020-01-30', 158 ],['2020-01-31', 178 ],['2020-02-01', 206 ], ['2020-02-02', 230], ['2020-02-03', 259], ['2020-02-04', 275], ['2020-02-05', 307], ['2020-02-06', 347], ['2020-02-07', 386], ['2020-02-08', 416], ['2020-02-09', 444], ['2020-02-10', 466], ['2020-02-11',487], ['2020-02-12', 497], ['2020-02-13',509], ['2020-02-14',523], ['2020-02-15',532],["2020-02-16",537],["2020-02-17",541],["2020-02-18",543],["2020-02-19",544],["2020-02-20",546],["2020-02-21",749],["2020-02-22",750],["2020-02-23",754],["2020-02-24",755],["2020-02-25",756]]
    },
    {
        "key": "北京",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 0 ],['2020-01-23', 36 ],['2020-01-24', 54 ],['2020-01-25', 68 ],['2020-01-26', 80 ],['2020-01-27', 91 ],['2020-01-28', 102 ],['2020-01-29', 114 ],['2020-01-30', 114 ],['2020-01-31', 132 ],['2020-02-01', 168 ], ['2020-02-02', 191], ['2020-02-03', 212], ['2020-02-04', 228], ['2020-02-05', 253], ['2020-02-06', 274], ['2020-02-07', 297], ['2020-02-08', 315], ['2020-02-09', 326], ['2020-02-10', 337], ['2020-02-11',342], ['2020-02-12', 352], ['2020-02-13',366], ['2020-02-14',372], ['2020-02-15',375],["2020-02-16",380],["2020-02-17",381],["2020-02-18",387],["2020-02-19",393],["2020-02-20",395],["2020-02-21",396],["2020-02-22",399],["2020-02-23",399],["2020-02-24",399],["2020-02-25",400]]
    },
    {
        "key": "安徽",
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        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 2 ],['2020-01-23', 0 ],['2020-01-24', 5 ],['2020-01-25', 0 ],['2020-01-26', 8 ],['2020-01-27', 8 ],['2020-01-28', 8 ],['2020-01-29', 10 ],['2020-01-30', 10 ],['2020-01-31', 12 ],['2020-02-01', 13 ], ['2020-02-02', 14], ['2020-02-03', 15], ['2020-02-04', 17], ['2020-02-05', 18], ['2020-02-06', 21], ['2020-02-07', 25], ['2020-02-08', 26], ['2020-02-09', 29], ['2020-02-10', 38], ['2020-02-11',49], ['2020-02-12', 50], ['2020-02-13',51], ['2020-02-14',56], ['2020-02-15',56],["2020-02-16",57],["2020-02-17",58],["2020-02-18",61],["2020-02-19",63],["2020-02-20",67],["2020-02-21",68],["2020-02-22",69],["2020-02-23",74],["2020-02-24",79],["2020-02-25",87]]
    },
    {
        "key": "澳门",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 0 ],['2020-01-23', 0 ],['2020-01-24', 0 ],['2020-01-25', 0 ],['2020-01-26', 6 ],['2020-01-27', 7 ],['2020-01-28', 7 ],['2020-01-29', 7 ],['2020-01-30', 7 ],['2020-01-31', 7 ],['2020-02-01', 7 ], ['2020-02-02', 8], ['2020-02-03', 8], ['2020-02-04', 10], ['2020-02-05', 10], ['2020-02-06', 10], ['2020-02-07', 10], ['2020-02-08', 10], ['2020-02-09', 10], ['2020-02-10', 10], ['2020-02-11',10], ['2020-02-12', 10], ['2020-02-13',10], ['2020-02-14',10], ['2020-02-15',10],["2020-02-16",10],["2020-02-17",10],["2020-02-18",10],["2020-02-19",10],["2020-02-20",10],["2020-02-21",10],["2020-02-22",10],["2020-02-23",10],["2020-02-24",10],["2020-02-25",10]]
    },
    {
        "key": "台湾",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 0 ],['2020-01-23', 0 ],['2020-01-24', 0 ],['2020-01-25', 0 ],['2020-01-26', 5 ],['2020-01-27', 5 ],['2020-01-28', 8 ],['2020-01-29', 8 ],['2020-01-30', 9 ],['2020-01-31', 9 ],['2020-02-01', 10 ], ['2020-02-02', 10], ['2020-02-03', 10], ['2020-02-04', 10], ['2020-02-05', 11], ['2020-02-06', 13], ['2020-02-07', 16], ['2020-02-08', 17], ['2020-02-09', 18], ['2020-02-10', 18], ['2020-02-11',18], ['2020-02-12', 18], ['2020-02-13',18], ['2020-02-14',18], ['2020-02-15',18],["2020-02-16",20],["2020-02-17",22],["2020-02-18",22],["2020-02-19",23],["2020-02-20",24],["2020-02-21",26],["2020-02-22",26],["2020-02-23",28],["2020-02-24",30],["2020-02-25",31]]
    },
    {
        "key": "西藏",
        "values": [['2020-01-20', 0 ],['2020-01-21', 0 ],['2020-01-22', 0 ],['2020-01-23', 0 ],['2020-01-24', 0 ],['2020-01-25', 0 ],['2020-01-26', 0 ],['2020-01-27', 0 ],['2020-01-28', 0 ],['2020-01-29', 1 ],['2020-01-30', 1 ],['2020-01-31', 1 ],['2020-02-01', 1 ], ['2020-02-02', 1], ['2020-02-03', 1], ['2020-02-04', 1], ['2020-02-05', 1], ['2020-02-06', 1], ['2020-02-07', 1], ['2020-02-08', 1], ['2020-02-09', 1], ['2020-02-10', 1], ['2020-02-11',1], ['2020-02-12', 1], ['2020-02-13',1], ['2020-02-14',1], ['2020-02-15',1],["2020-02-16",1],["2020-02-17",1],["2020-02-18",1],["2020-02-19",1],["2020-02-20",1],["2020-02-21",1],["2020-02-22",1],["2020-02-23",1],["2020-02-24",1],["2020-02-25",1]]
    }
];

var colors = d3.scale.category20();

var chart;
nv.addGraph(function() {
    chart = nv.models.stackedAreaChart()
        .useInteractiveGuideline(true)
        .x(function(d) {
            return new Date(d[0]) })
        .y(function(d) { return d[1] })
        .controlLabels({stacked: "Stacked"})
        .duration(300);

    chart.xAxis.tickFormat(function(d) {
        return d3.time.format('%x')(new Date(d))
    });

    chart.legend.vers('furious');

    d3.select('#chart1')
        .datum(his_data)
        .transition().duration(1000)
        .call(chart)
        .each('start', function() {
            setTimeout(function() {
                d3.selectAll('#chart1 *').each(function() {
                    if(this.__transition__)
                        this.__transition__.duration = 1;
                })
            }, 0)
        });

    nv.utils.windowResize(chart.update);
    return chart;
});
// - - - - - - - 武汉春运迁出趋势图 - - - - - //
let line_chart = echarts.init(document.getElementById('line'));

function loadLineData(date) {
    var url = "http://huiyan.baidu.com/migration/historycurve.jsonp?dt=city&id=420100&type=move_out&startDate=20200101&endDate=" + date + "&callback=lineCallback";
    // load the data
    $.ajax({
        url: url,
        dataType: "jsonp",
        jsonp: 'lineCallback'
    });
}

function lineCallback(data) {
    data = data.data.list;


    var dateList = [];
    var valueList = [];
    for (let i in data) {
        dateList.push(i);
        valueList.push(data[i]);
    }

    let lineOptions = {
        tooltip: {
            trigger: 'axis'
        },
        xAxis: [{
            data: dateList,
            axisLabel: {
                // interval:0,
                rotate:60
            }
        }],
        yAxis: [{
            splitLine: {show: false}
        }],
        grid: [{
            bottom: '40%'
        }, {
            top: '60%'
        }],
        series: [{
            type: 'line',
            //折线平滑
            smooth : true,
            // symbol : 'circle',
            itemStyle: {
                color: '#B7CCEB'
            },
            areaStyle: {
                color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                    offset: 0,
                    color: '#B7CCEB'
                }, {
                    offset: 1,
                    color: '#EFF4FB'
                }])
            },
            data: valueList
        }]
    };

    line_chart.setOption(lineOptions);
}

loadLineData(preDate);

// - - - - - - - map - - - - - - - - //
function getMapData() {
    let url = 'http://api.tianapi.com/txapi/ncovcity/index?key=698891ce03c51780f3433fa08e1b56d1';
    $.get(url, res => {
        if (res && res.code == 200) {
            let list = res.newslist;
            list.forEach(d => {
                mapData.push({name: d.provinceShortName, value: d.confirmedCount});
            });
            initMap();
        }
    });
}
getMapData();
function initMap() {
    var optionMap = {
        backgroundColor: '#FFFFFF',
        tooltip : {
            trigger: 'item',
            formatter: function(params) {
                var res = params.name+'<br/>';
                var myseries = params.seriesName + '：' + params.value;
                return res + myseries;
            }
        },
        //左侧小导航图标
        visualMap: {
            show : true,
            x: 'left',
            y: 'center',
            splitList: [
                {start: 10000},{start: 1000, end: 9999},
                {start: 500, end: 999},{start: 100, end: 499},
                {start: 10, end: 99},{start: 1, end: 9},
            ],
            color: ['#7F1100', '#BD1417', '#E64B45','#FF8C72', '#FDD29F', '#FAF1D1']
        },

        //配置属性
        series: [{
            name: '确诊人数',
            type: 'map',
            mapType: 'china',
            zoom: 0.9, // 缩放比例
            roam: false, // 是否开启平游或缩放
            label: {
                normal: {
                    show: true  //省份名称
                },
                emphasis: {
                    show: false
                }
            },
            data: mapData  //数据
        }]
    };
//初始化echarts实例
    mapChart = echarts.init(document.getElementById('map'));

//使用制定的配置项和数据显示图表
    mapChart.setOption(optionMap);
}


window.onresize = function() {
    rel_chart.resize();
    mapChart.resize();
    line_chart.resize();
}

<script src="http://code.jquery.com/jquery-2.1.4.min.js">

</script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js">

</script>
<script src="https://timelyportfolio.github.io/rCharts_d3_sankey//js/sankey.js" type='text/javascript'>

</script>

<script src="https://bl.ocks.org/dukevis/raw/d494d1c73261dac2f8dd/09da3aaee847bf226fb3b291ea9a4fb6783fd8cf/nv.d3.js">

</script>

<script src="https://bl.ocks.org/dukevis/raw/d494d1c73261dac2f8dd/09da3aaee847bf226fb3b291ea9a4fb6783fd8cf/colorbrewer.js">

</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/echarts/4.3.0/echarts.min.js">

</script>
<script src="https://www.html5tricks.com/demo/echarts-html5-canvas-map/js/china.js">
</script>
<link rel='stylesheet' href="https://timelyportfolio.github.io/rCharts_d3_sankey//css/sankey.css">
<link href="https://bl.ocks.org/dukevis/raw/d494d1c73261dac2f8dd/09da3aaee847bf226fb3b291ea9a4fb6783fd8cf/nv.d3.css" rel="stylesheet"
 type="text/css">

<body>
<div class="content">
	<h1>疫情实时数据</h1>
    <div class="updateTime">
        <span id="updateTime"></span>
    </div>
	<div class="VirusSummary_total">
		<table class="VirusSummary_table">
			<tbody>
				<tr>
					<td>
						<div class="VirusSummary_qzbl">
							<div class="VirusSummary_num VirusSummary_fontWeight" id="qzbl"></div>
							<div class="VirusSummary_txt">确诊病例</div>
							<div class="VirusSummary_pre">昨日<span class="VirusSummary_fontWeight" id="qzbl_pre"></span></div>
                        </div>
                    </td>
                    <td>
                        <div class="VirusSummary_ysbl">
                            <div class="VirusSummary_num VirusSummary_fontWeight" id="ysbl"></div>
                            <div class="VirusSummary_txt">疑似病例</div>
                            <div class="VirusSummary_pre">昨日<span class="VirusSummary_fontWeight" id="ysbl_pre"></span></div>
                        </div>
                    </td>
                    <td>
                        <div class="VirusSummary_zybl">
                            <div class="VirusSummary_num VirusSummary_fontWeight" id="zybl"></div>
                            <div class="VirusSummary_txt">治愈病例</div>
                            <div class="VirusSummary_pre">昨日<span class="VirusSummary_fontWeight" id="zybl_pre"></span></div>
                        </div>
                    </td>
                    <td>
                        <div class="VirusSummary_swbl">
                            <div class="VirusSummary_num VirusSummary_fontWeight" id="swbl"></div>
                            <div class="VirusSummary_txt">死亡病例</div>
                            <div class="VirusSummary_pre">昨日<span class="VirusSummary_fontWeight" id="swbl_pre"></span></div>
                        </div>
                    </td>
                </tr>
            </tbody>
        </table>
    </div>
    
    <div id='map'>
    
    </div>
	<div class='total'>
		<select onchange='jumpCity(this.value)' id="city_sel">
            <option value="全国" >全国</option>
        </select>
        <!-- <span ></span>
          <i id="refresh">刷新</i> -->
    </div>

    <div id='bar'>
    
    </div>
    <div id="remark">
        <ul>
            
        </ul>
    </div>
    <div class='footer'>
    (每十分钟更新，数据由丁香园整理, 天行数据接口)
    </div>
    <div style="clear:both;"></div>
	
	<h1>各省确认人数历史记录</h1>
	<svg id="chart1"></svg>

    <h1>武汉人员迁徙到各地</h1>
    <span style="margin-left: 12px;">日期：</span>
    <select onchange='dateChange(this.value)' id="date_sel">

    </select>
	<p id="chart"></p>

    <div>
        <h1>武汉春运迁出趋势图</h1>
        <div id="line"></div>
    </div>
</div>
</body>

.content {
    margin: 0 auto;
    max-width: 768px;
}

#bar {
    width: 100%;
    height: 400px;
    float: left;
}

#remark {
    width: 100%;
    float: left;
    color: #3e3e3e;
}

.total {
    margin-left: 50px;
    margin-top: 40px;
    float: left;
    width: 100%;
}

.total span {
    background: #4865f3;
    color: #fff;
    padding: 0 7px;
}

i {
    cursor: pointer;
    color: blue;
    margin-left: 10px;
}

.footer {
    width: 100%;
    float: left;
    font-size: 12px;
    color: #8c8c8c;
}

select {
}

#chart1 {
    height: 600px;
}

text {
    font: 12px sans-serif;
}

svg {
    display: block;
}

html,
body,
svg {
    margin: 0px;
    padding: 0px;
    /*height: 100%;*/
    /*width: 800px;*/
}

#line {
    width: 100%;
    height: 561px;
}

#map {
    width:100%;
    height:561px;
}

.VirusSummary_total {
    position: relative;
    margin-top: 1rem;
    padding: .9375rem 0;
    background: #f5f6f7;
    border-radius: .31rem;
    white-space: nowrap;
    font-size: .938rem;
    color: #333;
}

.VirusSummary_total .VirusSummary_table {
    table-layout: fixed;
    width: 100%;
}

.VirusSummary_total .VirusSummary_table td {
    width: 25%;
    text-align: center;
}

.VirusSummary_total .VirusSummary_num {
    font-size: 1.25rem;
    height: 1.25rem;
    line-height: 1.25rem;
    margin-bottom: .5rem;
}

.VirusSummary_total .VirusSummary_txt {
    font-size: .9375rem;
    height: .9375rem;
    line-height: .9375rem;
}

.VirusSummary_total .VirusSummary_pre {
    font-size: .75rem;
    height: .75rem;
    line-height: .75rem;
    margin-top: .5rem;
    color: #999;
}

.VirusSummary_total .VirusSummary_qzbl .VirusSummary_fontWeight {
    color: #e83132;
}

.VirusSummary_total .VirusSummary_fontWeight {
    font-weight: 700;
}

.VirusSummary_total .VirusSummary_ysbl .VirusSummary_fontWeight {
    color: #ec9217;
}

.VirusSummary_total .VirusSummary_zybl .VirusSummary_fontWeight {
    color: #10aeb5;
}

.VirusSummary_total .VirusSummary_swbl .VirusSummary_fontWeight {
    color: #4d5054;
}

.updateTime {
    text-align:right;
    color: #999;
    font-size: .8125rem;
}