Event type in the Event object in JavaScript

The Event object also contains the type of the event that occurred. By type is meant the name click, mouseover, and so on. The type property contains the event type:

elem.addEventListener('click', function(event) {
	console.log(event.type); // shows 'click'
});

In the following code, the same handler is attached to two events:

<button id="elem">text</button>

let elem = document.querySelector('#elem');

elem.addEventListener('click', func);
elem.addEventListener('dblclick', func);

function func() {
	
}

Add a code to the function func so that when you click on an element, this element is colored green, and when double-clicked - red.