渐变柱状+折线图echarts value配置项内容和展示

      let xData=[2016,2017,2018,2019,2020];
let yData=[1000,450,1200,1400,1500];
let yData1=[1200,500,1250,1500,1550];
let lineData=[20,40,60,80,95];
let lineData2=[30,50,70,90,100];
   console.log(xData,yData,lineData)
      let color = {
     x:0,
    y:0,
    x2:0,
    y2:1,
    colorStops:[
        {
            color:'#867DFF ',
            offset:0
        },
        {
            color:'#A59EFF',
            offset:1
        }
    ]
}
  let color2 = {
     x:0,
    y:0,
    x2:0,
    y2:1,
    colorStops:[
        {
            color:'#FFA531 ',
            offset:0
        },
        {
            color:'#FFC949',
            offset:1
        }
    ]
}
 option = {
    backgroundColor:"black",
    // tooltip:{
    //   backgroundColor:'transparent',
    //   borderWidth:0,
    //     trigger:'axis',
    //     formatter: item=>{
    //       console.log(item);
    //       return `<div style='width:289px;height:107px;background:url("data:image/png;base64,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") no-repeat center center'>
    //                 <div style='color:#CAEEFF;font-size:14px;padding-left:25px;padding-top:30px'>${item[0].name}年</div> 
    //                 <div style='color:#31C2FF;font-size:16px;padding-left:25px;'>${item[2].seriesName}：${item[2].value}</div>
    //               </div>`
    //     }
    // },
    legend:{  
        right:30,
        top:0,
        icon:'circle',
        textStyle:{
            color:"#CAEEFF",
            fontSize:14
        },
        itemWidth:12,
        itemHeight:12,
        data:[
            {
                name:'公共必修课'
            },
            {
              name:'公共选修课'  
            },
            {
            name:'专业课',
            itemStyle:{
                borderWidth:0
            }
            }
            ]
    },
    grid:{
        left:'3%',
        right:'3%',
        top:'20%',
        bottom:'5%',
        containLabel:true
    },
    xAxis: {
        data: xData,
        axisLine:{
            show:true,
               lineStyle:{
                color:'#31C2FF'
            }
        },
        axisTick:{
            show:false,
        },
        axisLabel:{
            show:true,
            color:"#CAEEFF",
            fontSize:14,
            formatter:function(params){
              return params + '年'
            }
        }
    },
    yAxis: [
        {
            type:'value',
            axisLine:{
                show:true,
                lineStyle:{
                color:'#31C2FF'
            }   
          } ,
           axisLabel:{
            show:true,
            color:"#CAEEFF",
            fontSize:14
        },  
      //   nameTextStyle: {
      //   color: '#CAEEFF',
      //   padding:[0,0,0,-30]
      // },
              axisTick:{
               show:false,
           },
             splitLine:{
               lineStyle: {
               color: '#31C2FF',
               opacity:0.2
        }
            },
        },
        {
            type:'value',
            max:100,
            min:0,
            splitLine:{
                show:false,
              
            },
              axisTick:{
            show:false,
   },
            axisLine:{
                show:true,
                lineStyle:{
                color:'#31C2FF'
            }
            },
             axisLabel:{
            show:true,
            color:"#CAEEFF",
        }
        }
    ],
    series: [
      {
        name:'公共必修课',
        type: 'bar',
        barWidth:42,
        data:yData,
        barGap:'5%',
        itemStyle:{
                color:color,
                borderRadius:[4,4,0,0],
        },
          label: {
            show: true,
            position: 'top', // 位置
            color: '#FFFFFF',
            fontSize: 14,
            distance: 1, // 距离
			      formatter: '{c} ' // 这里是数据展示的时候显示的数据
        } // 柱子上方的数值
    },
      {
        name:'公共选修课',
        type: 'bar',
        barWidth:42,
        data:yData1,
          itemStyle:{
                color:color2,
                 borderRadius:[4,4,0,0],
            },
          label: {
            show: true,
            position: 'top', // 位置
            color: '#FFFFFF',
            fontSize: 14,
            distance: 1, // 距离
			      formatter: '{c} ' // 这里是数据展示的时候显示的数据
        }, // 柱子上方的数值
    },
    {
        name: '专业课',
        type: 'line',
        data:lineData,
        yAxisIndex:1,
        symbolSize:10,
        symbol:'circle',
        label:{
            show:true,
            color: '#FFFFFF',
            fontSize: 14,
        },
        itemStyle:{
           normal:{
                color:"#008AFF",
                borderColor:'#FFFFFF',
                borderWidth:2
           }
        },
        lineStyle:{
            shadowColor:'#05ECF7',
            shadowBlur:5
        },
        tooltip:{
          formatter:function(params){
            console.log(params)
          }
        }
    },
    //   {
    //     name: '60人至90人课程门次',
    //     type: 'line',
    //     data:lineData2,
    //     yAxisIndex:1,
    //     symbolSize:10,
    //     symbol:'circle',
    //     label:{
    //       show:true  ,
    //       color: '#FFFFFF',
    //         fontSize: 14,
    //     },
    //     itemStyle:{
    //         color:"#FFC949",
    //     },
    //     lineStyle:{
    //         shadowColor:'#05ECF7',
    //         shadowBlur:5
    //     },
    //     tooltip:{
    //       formatter:function(params){
    //         console.log(params)
    //       }
    //     }
    // },
    ]
}