1.问题

在折线面积图中，areaStyle属性分别给了绿色和红色，但是红色被绿色覆盖了

2.问题解决

在series配置项中给每个折线对象添加一样stack:"666"属性，这样一般是能解决该问题了；如果不行就去除itemStyle属性并且给areaStyle添加color属性；还不行那就yAxis配置项改成数组(也就是多条y轴)；还不行就毁灭吧！！

3.代码

function initLineEcharts() {
    let chartDom = document.getElementById('line-echarts');
    let myChart = echarts.init(chartDom);
    let option;
    let xAxisData = [];
    let seriesData = [[], []];
    console.log("面积图数据处理前", lineEchartsDate.value);
    lineEchartsDate.value.forEach(item => {
        xAxisData.push(item.dimension);
        seriesData[0].push(item.exceptionCount);
        seriesData[1].push(item.normalCount);
    })

    option = {
        tooltip: {
            trigger: 'axis',
            show: true
        },
        xAxis: {
            type: 'category',
            boundaryGap: false,
            data: xAxisData,
            axisLabel: {
                interval: 0,
                width: 100,
                inside: false,
                // rotate: -15,
                overflow: 'truncate',
                ellipsis: '...'
            }
        },
        yAxis: {
            type: 'value',
            name: '指令执行次数',
            width: '100%',
            axisLabel: {
                formatter: '{value}'
            }
        },
        dataZoom: [
            {
                type: "slider",
                show: seriesData[0].length > 30,
                realtime: true,
                startValue: 0,
                endValue: 30,
                height: 4,
                fillerColor: "#0D3772", // 滚动条颜色
                borderColor: "#0D3772",
                handleSize: 0, // 两边手柄尺寸
                showDetail: false, // 拖拽时是否展示滚动条两侧的文字
                top: "86.5%",
                moveHandleStyle: {
                    color: "#0d3772",
                },
            }
        ],
        legend: {
            orient: "horizontal",
            bottom: '0px'
        },
        series: [
            {
                name: '指令执行异常次数',
                data: seriesData[0],
                type: 'line',
                areaStyle: {
                    color: '#3aa0ff'
                },
                colorBy: 'series',
                stack:'666'
            },
            {
                name: '指令执行正常次数',
                data: seriesData[1],
                type: 'line',
                areaStyle: {
                    color: '#4ecb73'
                },
                colorBy: 'series',
                stack:'666'
            }
        ]
    };
    option && myChart.setOption(option);
}

4.效果