通过插入null或NaN的数据点来实现"断开"的效果

const data = [['a', 1], ['b', 2], ['c', 3], ['d', 4], ['e', 5]]
data.splice(2, 0, NaN)
option = {xAxis: {type: "category",data: ['a', 'b', 'c', 'd', 'e']},yAxis: {},series: [{data,type: "line"}]
}