js 同时触发两个事件吗

// 创建自定义事件
const event1 = new Event('event1');
const event2 = new Event('event2');

// 添加事件监听器
document.addEventListener('event1', () => {
  console.log('Event 1 triggered');
});

document.addEventListener('event2', () => {
  console.log('Event 2 triggered');
});

// 同时触发两个事件
document.dispatchEvent(event1);
document.dispatchEvent(event2);

function triggerEvent1() {
  return new Promise((resolve) => {
    setTimeout(() => {
      console.log('Event 1 triggered');
      resolve();
    }, 1000);
  });
}

function triggerEvent2() {
  return new Promise((resolve) => {
    setTimeout(() => {
      console.log('Event 2 triggered');
      resolve();
    }, 1500);
  });
}

Promise.all([triggerEvent1(), triggerEvent2()]).then(() => {
  console.log('Both events have been triggered');
});

// 防抖示例
function debounce(func, wait) {
  let timeout;
  return function(...args) {
    clearTimeout(timeout);
    timeout = setTimeout(() => func.apply(this, args), wait);
  };
}

document.addEventListener('scroll', debounce(() => {
  console.log('Scroll event handled');
}, 200));