flush

function

通过清空宏任务队列直到其为空，来为 fakeAsync Zone 中的计时器模拟异步时间流逝。返回的值是本应经过的毫秒数。

Simulates the asynchronous passage of time for the timers in the fakeAsync zone by draining the macrotask queue until it is empty. The returned value is the milliseconds of time that would have been elapsed.

      
      flush(maxTurns?: number): number

参数

maxTurns

number

可选. 默认值是 `undefined`.

返回值

已流逝的模拟时间（以毫秒为单位）。

number: The simulated time elapsed, in millis.