https://www.csdn.net/tags/NtzacgzsNDYyMDYtYmxvZwO0O0OO0O0O.html

//定义y轴最大值、最小值
var yAxisMax = 1;
var yAxisMin = 1;
//定义图表组件
var option = {
    tooltip: {
        trigger: 'axis'
    },
    grid: { //坐标
        left: '3%',
        right: '4%',
        bottom: '10%',
        containLabel: true
    },
    legend: {  //图例
        data:['net目标','net','拜访次数','拜访次数目标'],
        y:'bottom'  //显示位置
    },
    xAxis: [
        {
            type: 'category',
            //data: ['2018Q1','2018Q2','2018Q3','2018Q4'],
            data: [],
            axisPointer: {
                type: 'shadow'
            },
            axisLine: {
                show: true,
                lineStyle: {
                    color: '#ccc'
                }
            },
            axisTick: {
                alignWithLabel: true
            }
        }
    ],
    yAxis: [
        {
            type: 'value',
            name: '规模(亿)',
            max: function(value) {
            yAxisMax = value.max;
            return (value.max * 1.2).toFixed(0);
        },
            min: function(value) {
                if(value.min < 0){
                    yAxisMin = value.min;
                    return (value.min * 1.2).toFixed(0);
                }else {
                    yAxisMin = 0;
                    return 0;
                }
            },
            axisLine: {
                show: true,
                lineStyle: {
                    color: '#ccc'
                }
            }
        },
        {
            type: 'value',
            name: '拜访次数',
            max: function(value) {
                return (value.max * 1.2).toFixed(0);
            },
            min: function(value) { //y轴左右两边0刻度对齐 比例一致
                return ((value.max * yAxisMin)/yAxisMax * 1.2).toFixed(0);
            },
            axisLine: {
                show: true,
                lineStyle: {
                    color: '#ccc'
                }
            }
        }
    ],
    color:['#cc5616', '#FF8C00', '#FFA500', '#FA8072'],
    series: [
        {
            name:'net目标',
            type:'bar',
            barWidth: '35%',
            label: { //图表上显示数据
                normal: {
                    show: true,
                    position: 'inside'
                }
            },
            data:[]
        },
        {
            name:'net',
            type:'bar',
            barWidth: '35%',
            label: { //图表上显示数据
                normal: {
                    show: true,
                    position: 'inside'
                }
            },
            data:[]
        },
        {
            name:'拜访次数',
            type:'line',
            yAxisIndex: 1, //使用双y轴的右边轴
            barWidth: '35%',
            label: { //图表上显示数据
                normal: {
                    show: true,
                    position: 'top'
                }
            },
            data:[]
        },
        {
            name:'拜访次数目标',
            type:'line',
            yAxisIndex: 1, //使用双y轴的右边轴
            barWidth: '35%',
            label: { //图表上显示数据
                normal: {
                    show: true,
                    position: 'top'
                }
            },
            data:[]
        }
    ]
};