Limit items in a .map loop

I would like to ask how can I limit my .map loop for example to a 5 items only because currently when I access an api it returns 20 items. but I want to display only 5. Mostly that I found is just looping all throughout the array of objects and not limiting it to a number of items.

Note: I have no control on the API because I’m just using the moviedb api

Here’s my code:

var film = this.props.data.map((item) => {
  return <FilmItem key={item.id} film={item} />
});

return film;

Answer

You could use Array#slice and take only the elements you need.

var film = this.props.data.slice(0, 5).map((item) => {
        return <FilmItem key={item.id} film={item} />
    });

return film;

If you do not need the original array anymore, you could mutate the array by setting the length to 5 and iterate them.