echarts设置柱状图数值在顶部，并且添加百分比，且为0时不显示

在series --> label 中添加属性 fromatter

position: \'top\'在顶部显示

 

option = {
    legend: {
        itemWidth: 15,
        itemHeight: 4,
        fontSize: 12,
        data: [\'同比\', \'环比\'],
        right: 55,
        top: 10,
        orient: \'vertical\',

    },
    tooltip: {},
    // 设置图标距离上下左右的距离
    grid: {
        top: 75,
        left: 10,
        right: 50,
        width:\'auto\',
        height:\'auto\'
    },
    xAxis: {

        type: \'category\',
        //x轴文字配置
        axisLabel: {
            show: true,
            inside: false,
            // align:\'left\',
            margin: 20,
            textStyle: {
                color: \'#1a1a1a\',
                fontSize: \'14\'
            }
        },
        axisTick: {
            show: false
        }, //去掉x轴刻度线
        data: [],
        axisLine: {
            show: true,
            length: 2,
            lineStyle: {
                color: "#B5B2B5"
            },
        }
    },
    yAxis: {
        //y轴不显示
        show: false,
        inverse: false, //是否反向坐标
        axisLine: {
            show: false,
        },
        // y轴刻度不显示
        axisLabel: {
            formatter: function () {
                return "";
            }
        },
        splitLine: {
            show: false
        },
        splitArea: {
            show: false
        }
    },
    series: [{
            name: \'同比\',
            type: \'bar\',
            barGap: \'50%\',
            barCategoryGap: \'20%\',
            barWidth: \'15%\',
            // stack: \'one\',
            data: [],
            itemStyle: {
                normal: {
                    label: {
                        show: true, //开启显示
                        position: \'top\', //在上方显示
                        formatter: function (val) {
                            if (val.value !== 0) {
                              return val.value+\'%\';
                            }  else {
                              return \'\';
                            }
                          },
                        textStyle: { //数值样式
                            color: \'#1a1a1a\',
                            fontSize: 12
                        }
                    },
                    barBorderRadius: 100,
                    color: new echarts.graphic.LinearGradient(
                        0, 1, 0, 0,
                        [{
                                offset: 0,
                                color: \'#f89741\'

                            },
                            {
                                offset: 1,
                                color: \'#fa6206\'
                            }
                        ]
                    )
                }
            },
        }, {
            name: \'环比\',
            type: \'bar\',
            barGap: \'50%\',
            barWidth: \'15%\',
            barCategoryGap: \'20%\',
            data: [],
            itemStyle: {
                normal: {
                    label: {
                        show: true, //开启显示
                        position: \'top\', //在上方显
                        formatter: function (val) {
                            if (val.value !== 0) {
                              return val.value+\'%\';
                            } else {
                              return \'\';
                            }
                          },
                        textStyle: { //数值样式
                            color: \'#1a1a1a\',
                            fontSize: 12
                        }
                    },
                    barBorderRadius: 100,
                    color: new echarts.graphic.LinearGradient(
                        0, 1, 0, 0,
                        [{
                                offset: 0,
                                color: \'#42d3f7\'
                                // color: \'#0c7be3\'


                            },
                            {
                                offset: 1,
                                //  color: \'#42d3f7\'
                                color: \'#0c7be3\'
                            }
                        ]
                    )
                }
            },
        },

    ]
};