什么是 initEvents()，我应该在 2018 年使用它吗？

Question

I'm trying to understand the code of another programmer and there is a initEvents () method. Some articles tells that this is an outdated method, but I'm not sure. Could you help me? What it is? And is it really outdated?

Answer 1

This is indeed a deprecated method which will init the event before dispatching , you should instead use the Event constructor which have a second argument for event initialisation and then dispatch the event as you like.
Something like this:

// create a look event that bubbles up and cannot be canceled

var evt = new Event("look", {"bubbles":true, "cancelable":false});
document.dispatchEvent(evt);

// event can be dispatched from any element, not only the document
myDiv.dispatchEvent(evt);

Answer 2

initEvents has been deprecated.

Instead use this to Create Events :

const customEvent = new Event("CustomEventEmmiter", {"bubbles":true, "cancelable":false});
document.dispatchEvent(customEvent);

And listen to it like this:

window.addEventListener("CustomEventEmmiter", function(){
  alert('CustomEventEmmiter TRIGGERED');
});

Check out more about Events here