know that they offer us a shorter syntax and maintain the context of the
this keyword in classes. We also showed a little hack how to avoid
that variable when handling DOM events and keep the element
that triggered the event. Today, we're going to continue with arrow functions
and learn how to use them to work with arrays.
Now let's look at methods that allow arrow functions to be
used when working with arrays. Some came up with ES6, some have been here since
ES5 and were initially designed to receive a
function. Let's show
This method is used when we need to filter certain items from an array. The
filter() method takes a function as a parameter that is
automatically called for each item of the array. In this function, we return
true if the item passed as a parameter meets our criteria. The
filter() method then stores the matching items to a new array and
Here's an example where we want to select only those numbers that are
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