Use Echarts to write a gradient line chart

option = {
    title: {
        // text: '折线图堆叠'
    },
    tooltip: {
        trigger: 'axis'
    },
    legend: {
        data:[{
            name: '邮件营销',
            icon: 'rect'
        }],
    },
    grid: {
        left: '3%',
        right: '4%',
        bottom: '3%',
        containLabel: true
    },
    xAxis: {
        type: 'category',
        boundaryGap: false,
        axisLine: {
            lineStyle: {
                color: '#999',
            }
        },
        axisTick: {
            lineStyle: {
                color: '#999',
            }
        },
        //网格线
        splitLine: {
            show:true,
        },
        data: ['周一','周二','周三','周四','周五','周六','周日']
    },
    yAxis: {
        type: 'value',
        axisLine: {
            lineStyle: {
                color: '#999',
            }
        },
         axisTick: {
            lineStyle: {
                color: '#999',
            }
        },
    },
    series: [
        {
            name:'邮件营销',
            type:'line',
            smooth: true,
            symbolSize: 7,
            data:[120, 132, 101, 134, 90, 230, 210],
            lineStyle: {
                
            },
            itemStyle: { 
                normal: { 
                    color: "rgba(179,127,235,0.5)", 
                    lineStyle: { 
                        color: '#7b7878',
                        width: 1,
                    } 
                }
            },
            areaStyle: {
                color: {
                    type: 'linear',
                    x: 0,
                    y: 0,
                    x2: 0,
                    y2: 1,
                    colorStops: [{
                        offset: 0, color: 'rgba(179,127,235,0.5)' // 0% 处的颜色
                    }, {
                        offset: 0.5, color: 'rgba(179,127,235,0.3)' // 100% 处的颜色
                    },{
                        offset: 1, color: 'rgba(179,127,235,0.1)' // 100% 处的颜色
                    }],
                    global: false // 缺省为 false
                }
            }
        },
    ]
};