Anonymous functions and removeEventListener?

Question

JavaScript

Good afternoon!
There is this code :

function text(a) {
  alert(a);
}

Let's say I need to pass parameters to a function that will handle the event, for this I use the anonymous wrapper function.
The code:

el.addEventListener('click',  function() {
  text('it\'s finnaly working!');
});

The question arises, how can I then remove the event listener from this element, if the two anonymous functions are different functions and such an entry will not work:
Code :

el.removeEventListener('click',  function() {
  text('it\'s finnaly working!');
});

Answer 1

It's simple: don't use anonymous functions.

var f1 = function() {
  text('it\'s finnaly working!');
};

el.addEventListener('click',  f1);
// ... 
el.removeEventListener('click',  f1);