JS add active hover item list

Question

I have list item

.thumbs {display: flex;}
.thumbs .item {width: 150px; height: 150px; margin-right: 10px; border: 1px solid black}
.thumbs .item.active {border: 1px solid red}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="thumbs">
  <div class="item active">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
  <div class="item">4</div>
</div>

How to hover .thumbs .item add active to item:hover & clear active item(1). And if not hover any item stick active item last hover.

same as:

hover item(2): add active item(2) - Clear active item(1) && If don't hover any item or hover out .thumbs element stick active item(2).

I user js hover active but not hover clear all active.

$(document).ready(function() {
  $(".thumbs .item").hover(
    function() {
        $(this).addClass('active');
    }, function() {
        $( this ).removeClass('active');
    }
);
});

Answer 1

Don't forgot before add active class remove all the class and then add it to current element:

$(".item").removeClass('active');
$(this).addClass('active');

And for last item use mouseout event for .thumbs. You need to keep last Element when an element unhovered (lastElemtHoverd = $(this);)

$(document).ready(function () {
    var lastElemtHoverd;

    $(".thumbs").mouseout(function () {
        lastElemtHoverd.addClass('active');
    });

    $(".thumbs .item").hover(
        function () {
            $(".item").removeClass('active');
            $(this).addClass('active');
        }, function () {
            $(this).removeClass('active');
            lastElemtHoverd = $(this);
        }
    );
});

.thumbs {
    display: flex;
}

    .thumbs .item {
        width: 150px;
        height: 150px;
        margin-right: 10px;
        border: 1px solid black
    }

        .thumbs .item.active {
            border: 1px solid red
        }

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="thumbs">
        <div class="item active">1</div>
        <div class="item">2</div>
        <div class="item">3</div>
        <div class="item">4</div>
</div>