var dom = document.getElementById("container");
var myChart = echarts.init(dom,'dark');
var app = {};
option = null;

option = {
    title: {
        //text: legend[0]+' V.S '+legend[2],
        text: headtxt,
        subtext: subtxt,
        textAlign:'center',
        left:'50%'
    },
    tooltip: {
        trigger: 'axis'
    },
    legend: {
        data:legend,
        right:'20'
    },
    grid: {
        left: '3%',
        right: '4%',
        bottom: '3%',
        containLabel: true
    },
    toolbox: {
        feature: {
            saveAsImage: {}
        }
    },
    xAxis: {
        //type: 'category',
        type: 'time',
        boundaryGap: false
    },
    yAxis: [{
        type: 'value',
        name:legend[0], //图列
        show:true,
        scale:true,
    },
        {
            type:'value',
            name:legend[1]+'-'+unit,  //图例
            scale:true,
            boundaryGap:false,
            show:true,
            splitLine:{
                show:false, //Y2 坐标刻度横线
            },
        }
    ],
    dataZoom: [{
        type: 'inside',   //or slider
        start: 0,
        end: 100
    }, {
        start: 0,
        end: 100,
        handleIcon: 'M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z',
        handleSize: '80%',
        handleStyle: {
            color: '#fff',
            shadowBlur: 3,
            shadowColor: 'rgba(0, 0, 0, 0.6)',
            shadowOffsetX: 2,
            shadowOffsetY: 2
        }
    }],
    series: [
        {
            name:legend[0],
            type:'line',
            yAxisIndex:0,
            symbol:'none',
            data:data1,
},
{
    name:legend[1],
        type:'line',
    yAxisIndex:1,
    symbol:'none',  //数据圆点
    smooth:false,
    data:data2,
}
]
};

if (option && typeof option === "object") {
    myChart.setOption(option, true);
}