数据可视化演示效果：Echarts动态更新（官方标准）

var base = +new Date(2019, 5, 3);
var oneDay = 24 * 3600 * 1000;
var date = [];
var data = [Math.random() * 150];
var now = new Date(base);
function addData(shift) {
    now = [now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/');
    date.push(now);
    data.push((Math.random() - 0.4) * 10 + data[data.length - 1]);
    if (shift) {
        date.shift();
        data.shift();
    }
    now = new Date(+new Date(now) + oneDay);
}
for (var i = 1; i < 12; i++) {
    addData();
}
option = {
    title : {
        text: '某地区蒸发量',
        subtext: '纯属虚构'
    },
    tooltip : {
        trigger: 'axis'
    },
    legend: {
        data:['蒸发量']
    },
    calculable : true,
    xAxis : [
        {
            type : 'category',
            data : date
        }
    ],
    yAxis : [
        {
            type : 'value'
        }
    ],
    series : [
        {
            name:'蒸发量',
            type:'bar',
            data:data,
        }
    ]
};
setInterval(function () {
    addData(true);
    myChart.setOption({
        xAxis: {
            data: date
        },
        series: [{
            name:'蒸发量',
            data: data
        }]
    });
}, 5000);