Multiple handlers for one event in JavaScript

Multiple functions can be attached to one element at once. Let's look at an example. Let's have a button:

html<input id="button" type="submit">

Let's say we have two functions:

javascriptfunction func1() {
  console.log('1');
}

function func2() {
  console.log('2');
}

Get a link to our button into a variable:

javascriptlet button = document.querySelector('#button');

And now let's bind both the first and second functions to our button as click handlers:

javascriptbutton.addEventListener('click', func1);
button.addEventListener('click', func2);

html<p id="elem">text</p>

javascriptfunction func1() {
  console.log('1');
}

function func2() {
  console.log('2');
}

function func3() {
  console.log('3');
}