option = { xAxis: { type: 'category', boundaryGap: false, data: ['2018-03-01', '2018-03-02', '2018-03-03', '2018-03-04', '2018-03-05', '2018-03-06', '2018-03-07'] }, yAxis: { type: 'value' }, series: [{ data: [50, 60, 100, 30, 40, 55, 95], type: 'line', smooth: true, areaStyle: {} }] };