Optionaltimeout: number用于延迟执行函数的计时器，delayMs毫秒后异步执行回调函数callback。 该函数自身是同步的，返回用于清除此计时器的ID，可在 clearTimeout 中使用。
要延迟执行的回调函数。
延迟的毫秒数。
用于清除计时器的ID。
用于延迟执行函数的计时器，delayMs毫秒后异步执行回调函数callback。 该函数自身是同步的，返回用于清除此计时器的ID，可在 clearTimeout 中使用。
要延迟执行的回调函数。
延迟的毫秒数。
用于清除计时器的ID。
Schedules execution of a one-time callback after delay milliseconds.
The callback will likely not be invoked in precisely delay milliseconds.
Node.js makes no guarantees about the exact timing of when callbacks will fire,
nor of their ordering. The callback will be called as close as possible to the
time specified.
When delay is larger than 2147483647 or less than 1 or NaN, the delay
will be set to 1. Non-integer delays are truncated to an integer.
If callback is not a function, a TypeError will be thrown.
This method has a custom variant for promises that is available using
timersPromises.setTimeout().
for use with clearTimeout()
MDN Reference