Adding anonymous handlers in a loop in JavaScript

Anonymous functions can also be used as handlers added in a loop. This makes the code more compact and saves us from having to come up with a name for a function that is only used in one place.

Let's add anonymous handlers to elements:

javascriptlet elems = document.querySelectorAll('p');

for (let elem of elems) {
  elem.addEventListener('click', function() {
    console.log(this.textContent);
  });
}

html<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>

javascriptlet divs = document.querySelectorAll('div');

for (let div of divs) {
  div.addEventListener('click', func);
}

function func() {
  this.textContent++;
}