主题
xAxis: { name: '折线类目', data: ['类目1', '类目2', '类目3'] }, yAxis: {}, series: [ { name: '种类1', type: 'line', data: [10, 20, 30] } ]
{ name: '种类1', type: 'line', data: [10, 20, 30], areaStyle:{} // 区域填充 }