Bootstrap carousel last item will hide right control

Question

I am using bootstrap 4.0 version. I want to hide left control on the first item, and hide the right control on the last item. I think using jQuery it can be solved.

Left control will hide all the time it only show on the last item. And right control will show all the time but hide in the last item.

HTML:

<div id="carousel-1" class="carousel slide" data-ride="carousel">

      <div class="carousel-inner">
        <div class="carousel-item active">
          Slide 1
        </div>
        <div class="carousel-item">
          Slide 2
        </div>
        <div class="carousel-item">
          Slide 3
        </div>
      </div>
      <a class="carousel-control-prev" href="#carousel-1" role="button" data-slide="prev">
        <span class="carousel-control-prev-icon" aria-hidden="true"></span>
        <span class="sr-only">Previous</span>
      </a>
      <a class="carousel-control-next" href="#carousel-1" role="button" data-slide="next">
        <span class="carousel-control-next-icon" aria-hidden="true"></span>
        <span class="sr-only">Next</span>
      </a>
    </div>

JQuery:

$('.carousel').carousel({
    interval: false,
})

function checkitem()
{
    var $this = $('#carousel-1');
    if ($('.carousel-inner .carousel-item:first').hasClass('active')) {
        $this.children('.carousel-control-prev').hide();
    } else if ($('.carousel-inner .carousel-item:last').hasClass('active')) {
        $this.children('.carousel-control-next').hide();
    } else {
        $this.children('.carousel-control').show();

    }
}

Answer 1

I removed the data-ride="carousel" so it doesn't start automatically, setted interval: false and wrap: false.
Added .d-none (Bootstrap class) to the controls so they start hidden.

If there are at least two items, then the next control is displayed.
Then, on every slide we check the next position and show the control accordingly.

var carouselLength = $('.carousel-item').length - 1;

// If there is more than one item
if (carouselLength) {
    $('.carousel-control-next').removeClass('d-none');
}

$('.carousel').carousel({
    interval: false,
    wrap: false
}).on('slide.bs.carousel', function (e) {
    // First one
    if (e.to == 0) {
        $('.carousel-control-prev').addClass('d-none');
        $('.carousel-control-next').removeClass('d-none');
    } // Last one
    else if (e.to == carouselLength) {
        $('.carousel-control-prev').removeClass('d-none');
        $('.carousel-control-next').addClass('d-none');
    } // The rest
    else {
        $('.carousel-control-prev').removeClass('d-none');
        $('.carousel-control-next').removeClass('d-none');
    }
});

.carousel {
    background-color: #ddd;
}

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>

<div id="carousel-1" class="carousel slide">
    <div class="carousel-inner">
        <div class="carousel-item active">
            Slide 1
        </div>
        <div class="carousel-item">
            Slide 2
        </div>
        <div class="carousel-item">
            Slide 3
        </div>
    </div>
    <a class="carousel-control-prev d-none" href="#carousel-1" role="button" data-slide="prev">
        <span class="carousel-control-prev-icon" aria-hidden="true"></span>
        <span class="sr-only">Previous</span>
    </a>
    <a class="carousel-control-next d-none" href="#carousel-1" role="button" data-slide="next">
        <span class="carousel-control-next-icon" aria-hidden="true"></span>
        <span class="sr-only">Next</span>
    </a>
</div>