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20:11:45图表已生成
代码
var attr = {
    name: "智能环空设备",
    unit: "台"

}
var xData = ["2020-08-07", "2020-08-08", "2020-08-09", "2020-08-10", "2020-08-11", "2020-08-12", "2020-08-13", "2020-08-14", "2020-08-15", "2020-08-16", "2020-08-17"];
var lines = [
    [400, 400, 300, 300, 300, 400, 400, 400, 350,548,590]
];
var option = {
    backgroundColor: '#060B1C',
    tooltip: {
        trigger: 'item',
        backgroundColor: 'none',
        padding: 5,
        formatter: function(param) {
            var resultTooltip = "<div style='background:rgba(13,5,30,.6);border:1px solid rgba(255,255,255,.2);padding:5px;border-radius:3px;'>" +
                "<div style='text-align:center;'>" + param.name + "</div>" +
                "<div style='padding-top:5px;'>";

            resultTooltip +=
                "<span style='display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:" + param.color.colorStops[0].color + ";'></span>" +
                "<span style=''> " + param.seriesName + ": </span>" +
                "<span style='color:" + param.color.colorStops[0].color + "'>" + param.value + "</span></span><span>" + attr.unit + "</span></br>"


            resultTooltip += "</div>";

            return resultTooltip
        }
    },
    grid: {
        left: '10%',
        top: '8%',
        right: '5%',
        bottom: '19%',
    },
    legend: {
        show: false,
    },
    xAxis: [{
        type: 'category',
        data: xData,
        axisLabel: {
            show: true,
            fontSize: 9,
            textStyle: {
                color: "#C9C8CD" //X轴文字颜色
            },
            formatter: function(value) {
                var str = "";
                str += value.substring(0, 4) + "\n";
                str += value.substring(5, 10);
                return str;
            }
        },
        axisLine: {
            show: false //不显示x轴
        },
        axisTick: {
            show: false //不显示刻度
        },
        // boundaryGap: false,
        splitLine: {
            show: true,
            width: 0.08,
            lineStyle: {
                type: "solid",
                color: "#03202E"
            }
        },
        axisPointer: { //轴指示器
            show: false,
            type: 'shadow',
            // z: 1,
            // shadowStyle: {
            //     color: {
            //         type: 'linear',
            //         x: 0,
            //         y: 0,
            //         x2: 0,
            //         y2: 1,
            //         colorStops: [{
            //             offset: 0,
            //             color: 'rgba(18,155,249,0)' // 0% 处的颜色
            //         }, {
            //             offset: 1,
            //             color: 'rgba(18,155,249,1)' // 100% 处的颜色
            //         }],
            //         global: false // 缺省为 false
            //     },
            //     shadowColor: 'rgba(0, 0, 0, 0.2)',
            //     shadowBlur: 5
            // }
        },

    }],
    yAxis: [{
        type: 'value',
        // scale: true, //坐标轴起点不限制0
        axisLabel: {
            show: true,
            textStyle: {
                fontSize: 9,
                color: "#C9C8CD" //X轴文字颜色
            }
        },
        splitLine: {
            show: false,

        },
        axisTick: {
            show: false, //不显示刻度
        },
        axisLine: {
            show: false,
        },
        nameTextStyle: {
            color: "#FFFFFF"
        },
        splitArea: {
            show: false
        }
    }],
    series: [

        {
            name: attr.name,
            type: 'bar',
            // barWidth: 15,
            xAxisIndex: 0,
            yAxisIndex: 0,
            itemStyle: {
                barBorderRadius: 50,
                normal: {
                    barBorderRadius: 50,
                    color: function(params) {
                        // console.log(params);
                        // if(params.dataIndex == maxIndex){
                        //     colors= ["#fc532d","#fe7018","#ff8706"]
                        // }else{
                        colors = ["#33ffff", "#17a1e5"]
                        // }
                        return new echarts.graphic.LinearGradient(0, 0, 0, 1,
                            [{
                                    offset: 0,
                                    color: colors[0]
                                },
                                {
                                    offset: 1,
                                    color: colors[1]
                                }
                            ]);
                    }
                },
                emphasis: {
                    color: new echarts.graphic.LinearGradient(
                        0, 0, 0, 1,
                        [{
                                offset: 0,
                                color: '#F4CA1B'
                            },
                            {
                                offset: 1,
                                color: '#E29400'
                            }
                        ]
                    )

                }
            },
            zlevel: 11,
            data: lines[0]
        }
    ]
};
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