I’ll preserve the story’s playful tone and wordplay, and translate the comments in the co...

I’ll preserve the story’s playful tone and wordplay, and translate the comments in the code examples.# Look! for..in and for..of Are Arguing Over There! by zhangxinxu, from https://www.zhangxinxu.com/wordpress/?p=7908 This article may be reproduced in full with written permissio...

Code: Dispatching a CustomEvent

const event = new CustomEvent('show', {
  detail: { message: payload, sentAt: new Date().toLocaleTimeString() }
});

window.dispatchEvent(event);

Code: Listening for the Event Payload

window.addEventListener('show', (event) => {
  render(event.detail.message, event.detail.sentAt);
});