Sometimes I see in the tag input an attribut like onclick how does it work? Where can I have the lists of events like onclick ??

Question

Events

Answer 1

A good introduction to events:
https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Building_blocks/Events

Answer 2

Adam if I want to write a function in js will the code above be appropriate ??

Answer 3

<span onclick="alert('hello');">Click</span>
would alert hello when you click it.

<span onclick="sayHello();">Click</span>
would run the function sayHello and execute whatever it contained.

here is a list of common events as they are called.
https://www.w3schools.com/js/js_events.asp

Answer 4

yes. those will work.