设置echarts线的样式

<!DOCTYPE html>
<html lang="en">

<head>
    <Meta charset="UTF-8">
    <Meta http-equiv="X-UA-Compatible" content="IE=edge">
    <Meta name="viewport" content="width=device-width,initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.staticfile.org/echarts/4.3.0/echarts.min.js"></script>
</head>

<body>
    <div style="width: 600px;height: 400px;background:#ccc"></div>
    <script>
        var mCharts = echarts.init(document.querySelector('div'))
        var option = {
            title: {
                text: '折线图堆叠'
            },tooltip: {
                trigger: 'axis'
            },legend: {
                data: ['邮件营销','联盟广告','视频广告','直接访问','搜索引擎']
            },grid: {
                left: '3%',right: '4%',bottom: '3%',containLabel: true
            },toolBox: {
                feature: {
                    saveAsImage: {}
                }
            },xAxis: {
                type: 'category',boundaryGap: false,data: ['周一','周二','周三','周四','周五','周六','周日'],splitLine: {
                    show: true,linestyle: {
                        color: '#4B0082',//垂直于x轴的线的颜色
                        width: 1,//线的宽度
                    }
                }
            },yAxis: {
                type: 'value',linestyle: {
                        color: '#e8e8e8',//垂直于y轴的线的颜色
                        width: 1,type:'dotted' //'dotted'虚线 'solid'实线
                    }
                }

            },series: [{
                    name: '邮件营销',type: 'line',stack: '总量',data: [120,132,101,134,90,230,210]
                },{
                    name: '联盟广告',data: [220,182,191,234,290,330,310]
                },{
                    name: '视频广告',data: [150,232,201,154,190,410]
                },{
                    name: '直接访问',data: [320,332,301,334,390,320]
                },{
                    name: '搜索引擎',data: [820,932,901,934,1290,1330,1320],itemStyle: {
                        normal: {
                            color: '#f5bf58',label: {
                                show: true,formatter: '{b}:{c}',position: 'top',textStyle: {
                                    fontWeight: '700',fontSize: '12',color: '#f5bf58'

                                }
                            },linestyle: {
                                color: '#f5bf58',width: 4
                            }
                        }
                    },}
            ]
        };
        mCharts.setoption(option)
    </script>
</body>
</html>