| 属性 | 类型 | 默认 |说明| | :------ | :-----: | :-----: | :------------ | |opts.extra.line| Object | | 折线图配置 | |opts.extra.line.type | String| 默认straight | 可选值:curve曲线,straight直线 | |opts.extra.line.width| Number| 默认2px | 折线宽度 | ## **标准数据格式** ``` chartData: { categories: ['2012', '2013', '2014', '2015', '2016', '2017'], series: [{ name: '成交量A', data: [35, 20, 25, 37, 4, 20], color: '#000000' }, { name: '成交量B', data: [70, 40, 65, 100, 44, 68] }, { name: '成交量C', data: [100, 80, 95, 150, 112, 132] }] } ```