I'm trying to call event but my Visual Code say ("event is deprecated ts(6385)")

Question

I'm studying Javascript using Visual Code and every time a similar exercise that uses 'event' (the event shows in the code with the strikethrough like e̶v̶e̶n̶t̶) appears I can't complete it because of this annoying issue. In the description pop up a warning showing the issue ("event is deprecated ts(6385)"). I look out in the forums and stack over flow but I can not find any answer for this problem, only a few places says the lib dom and @deprecated, but I don't what to do.

Please, any way to help and learn to pass this problem out will be very useful.

function sayMyFirstName(element){
    alert("My First name is..." + element.value)

}

function sayMyLastName(){
    console.log(event)

}

Answer 1

It sounds like you're getting TypeScript validation for a simple JS project. There are several things you can try:

• In your settings file (settings.json):

  "typescript.validate.enable": false

... OR ...

• In your .js source file(s):

  /*tslint:disabled*/

---

A separate issue is why you're getting the "deprecation" warning in the first place. This is the reason:

https://developer.mozilla.org/en-US/docs/Web/API/Window/event

The read-only Window property event returns the Event which is currently being handled by the site's code. Outside the context of an event handler, the value is always undefined.

You should avoid using this property in new code, and should instead use the Event passed into the event handler function. This property is not universally supported and even when supported introduces potential fragility to your code.

In other words, "event" should really be passed as an argument to a JS event handler. You shouldn't be using the global object; you shouldn't NEED to use the global object.

Here are a few good tutorials:

• Introduction to events (MDN.com)
• JavaScript Events

Strong suggestion:

If you're learning JavaScript, please make sure your study materials are up-to-date (definitely covering ES6!). This is a good book: Secrets of the JavaScript Ninja 2nd Edition