Javascript相互减去时间跨度

Question

假设我有一个时间跨度{"start_time":"8:30", "end_time":"18:00"}

我想减去其他时间跨度，例如{"start_time":"12:30", "end_time":"14:00"}并得到以下结果：
[{"start_time":"8:30", "end_time":"12:30"},{"start_time":"14:00", "end_time":"18:00"}]

编辑：我还需要减去其他时间跨度，例如[{"start_time":"8:30", "end_time":"12:30"},{"start_time":"14:00", "end_time":"18:00"}] - {"start_time":"16:30", "end_time":"17:00"}应该给我[{"start_time":"8:30", "end_time":"12:30"},{"start_time":"14:00", "end_time":"16:30"},{"start_time":"17:00", "end_time":"18:00"}]

我想知道什么是最好的逻辑方法。

谢谢

Answer 1

function subtract(t1, t2){
     return [{'start_time': t1.start_time, 'end_time': t2.start_time}, 
               {'start_time': t2.end_time, 'end_time': t1.end_time}]
}