趋势图echarts 折线配置项内容和展示

       var base = +new Date(1968, 9, 3);
    var oneDay = 24 * 3600 * 1000;
    var date = [];

    var data = [Math.random() * 300];

    for (var i = 1; i < 50; i++) {
        var now = new Date(base += oneDay);
        date.push([now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/'));
        data.push(Math.round((Math.random() - 0.5) * 20 + data[i - 1]));
    }
option = {
    tooltip: {
            trigger: 'axis',
            position: function (pt) {
                return [pt[0], '10%'];
            }
        },
        grid: {
            top: 15,
            left: 40,
            right: 15,
            height: '80%'
        },
        xAxis: {
            type: 'category',
            boundaryGap: false,
            axisLine: {
                lineStyle: {
                    color: '#000'
                }
            },
            data: date
        },
        yAxis: {
            type: 'value',
            boundaryGap: [0, '100%'],
            axisLine: {
                lineStyle: {
                    color: '#000'
                }
            },
        },
        series: [
            {
                name: '模拟数据',
                type: 'line',
                stack: 'a',
                smooth: true,
                symbol: 'none',
                sampling: 'average',
                itemStyle: {
                    color: '#8ec6ad'
                },
                areaStyle: {
                    color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                        offset: 0,
                        color: '#8ec6ad'
                    }, {
                        offset: 1,
                        color: '#ffe'
                    }])
                },
                data: data
            }, {
                name: '模拟数据',
                type: 'line',
                smooth: true,
                stack: 'a',
                symbol: 'none',
                sampling: 'average',
                itemStyle: {
                    color: '#8ec6ad'
                },
                areaStyle: {
                    color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                        offset: 0,
                        color: '#d68262'
                    }, {
                        offset: 1,
                        color: '#ffe'
                    }])
                },
                data: data
            }
        ]
};