取消定时器

¥Cancelling timers

setImmediate()、setInterval() 和 setTimeout() 方法各自返回表示调度的定时器的对象。这些可用于取消定时器并防止其触发。

¥The setImmediate(), setInterval(), and setTimeout() methods each return objects that represent the scheduled timers. These can be used to cancel the timer and prevent it from triggering.

对于 setImmediate() 和 setTimeout() 的 promise 化变体，可以使用 AbortController 来取消定时器。当取消时，返回的 Promise 将使用 'AbortError' 拒绝。

¥For the promisified variants of setImmediate() and setTimeout(), an AbortController may be used to cancel the timer. When canceled, the returned Promises will be rejected with an 'AbortError'.

对于 setImmediate()：

¥For setImmediate():

import { setImmediate as setImmediatePromise } from 'node:timers/promises';

const ac = new AbortController();
const signal = ac.signal;

// We do not `await` the promise so `ac.abort()` is called concurrently.
setImmediatePromise('foobar', { signal })
  .then(console.log)
  .catch((err) => {
    if (err.name === 'AbortError')
      console.error('The immediate was aborted');
  });

ac.abort();const { setImmediate: setImmediatePromise } = require('node:timers/promises');

const ac = new AbortController();
const signal = ac.signal;

setImmediatePromise('foobar', { signal })
  .then(console.log)
  .catch((err) => {
    if (err.name === 'AbortError')
      console.error('The immediate was aborted');
  });

ac.abort();拷贝

对于 setTimeout()：

¥For setTimeout():

import { setTimeout as setTimeoutPromise } from 'node:timers/promises';

const ac = new AbortController();
const signal = ac.signal;

// We do not `await` the promise so `ac.abort()` is called concurrently.
setTimeoutPromise(1000, 'foobar', { signal })
  .then(console.log)
  .catch((err) => {
    if (err.name === 'AbortError')
      console.error('The timeout was aborted');
  });

ac.abort();const { setTimeout: setTimeoutPromise } = require('node:timers/promises');

const ac = new AbortController();
const signal = ac.signal;

setTimeoutPromise(1000, 'foobar', { signal })
  .then(console.log)
  .catch((err) => {
    if (err.name === 'AbortError')
      console.error('The timeout was aborted');
  });

ac.abort();拷贝