How to change pictures with keyboard arrows?

[shadoks]

I have used this gallery from W3Schools  https://www.w3schools.com/howto/howto_js_slideshow_gallery.asp

and i want to add function arrow keyboard keys to change pictures in the gallery.

Can someone here help me out?

[niche]

What’s a function arrow keyboard key?

the W3 example already has something that could be function arrow keyboard keys.  

[shaili_shah]

Hi.

We can use the keycode for it.

Ex:- 

$(document).keydown(function(e){
    if(e.keyCode === 37){ plusSlides(-1) }    //for left arrow
    if(e.keyCode === 39){ plusSlides(1) }     //for right arrow
});

Hope it helps.