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knockout-sortablejs
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example.html

<!DOCTYPE html>
<html>
<head>
    <title></title>
	<meta charset="utf-8" />

	<style>
		.grid {
			font-size: 0;
		}
		.col-1_2 {
			box-sizing:border-box;
			display: inline-block;
			padding: 0.5rem;
			font-size: 1rem;
		}
		.col-1_2 {
			width: 50%;
		}

		.mirror {
			color: #ccc;
		}
	</style>
</head>
<body>
	<div class="grid">
		<div class="col-1_2">
			<div class="grid">
				<div class="col-1_2">
					<h4>Sortable observable</h4>
					<ul data-bind="sortable: {foreach: sortableObservableItems}">
						<li data-bind="text: name"></li>
					</ul>
				</div>
				<div class="col-1_2 mirror">
					<h4>Sortable observable mirrored</h4>
					<ul data-bind="foreach: sortableObservableItems">
						<li data-bind="text: name"></li>
					</ul>
				</div>
			</div>
		</div>

		<div class="col-1_2">
			<div class="grid">
				<div class="col-1_2">
					<h4>Sortable computed</h4>
					<ul data-bind="sortable: {foreach: sortableComputedItems, collection: underlayingSortableComputedItems}">
						<li data-bind="text: name"></li>
					</ul>
				</div>
				<div class="col-1_2 mirror">
					<h4>Sortable underlaying computed</h4>
					<ul data-bind="foreach: underlayingSortableComputedItems">
						<li data-bind="text: name"></li>
					</ul>
				</div>
			</div>
		</div>
	</div>

	<div class="grid">
		<div class="col-1_2">
			<div class="grid">
				<div class="col-1_2">
					<h4>Draggable observable</h4>
					<ul data-bind="draggable: {foreach: draggableObservableItems}">
						<li data-bind="text: name"></li>
					</ul>
				</div>
				<div class="col-1_2 mirror">
					<h4>Draggable observable mirrored</h4>
					<ul data-bind="foreach: draggableObservableItems">
						<li data-bind="text: name"></li>
					</ul>
				</div>
			</div>
		</div>

		<div class="col-1_2">
			<div class="grid">
				<div class="col-1_2">
					<h4>Draggable computed</h4>
					<ul data-bind="draggable: {foreach: draggableComputedItems, collection: underlayingDraggableComputedItems}">
						<li data-bind="text: name"></li>
					</ul>
				</div>
				<div class="col-1_2 mirror">
					<h4>Draggable computed mirrored</h4>
					<ul data-bind="foreach: draggableComputedItems">
						<li data-bind="text: name"></li>
					</ul>
				</div>
			</div>
		</div>
	</div>

	<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.3.0/knockout-min.js"></script>
	<script src="../Sortable.js"></script>
	<script src="../knockout-sortable.js"></script>
	<script>

		var sortableComputedItems = [{ name: 'Sortable computed 1' }, { name: 'Filtered computed 2' }, { name: 'Sortable computed 3' }, { name: 'Filtered computed 4' }, { name: 'Sortable computed 5' }, { name: 'Filtered computed 6' }];
		var sortableObservableItems = [{ name: 'Sortable observable 1' }, { name: 'Sortable observable 2' }, { name: 'Sortable observable 3' }];

		var draggableComputedItems = [{ name: 'Draggable computed 1' }, { name: 'Draggable computed 2' }, { name: 'Draggable computed 3' }];
		var draggableObservableItems = [{ name: 'Draggable observable 1' }, { name: 'Draggable observable 2' }, { name: 'Draggable observable 3' }];

		var vm = {
			underlayingSortableComputedItems: ko.observableArray(sortableComputedItems),
			sortableObservableItems: ko.observableArray(sortableObservableItems),
			underlayingDraggableComputedItems: ko.observableArray(draggableComputedItems),
			draggableObservableItems: ko.observableArray(draggableObservableItems)
		}
		vm.sortableComputedItems = ko.computed(function () {
			return vm.underlayingSortableComputedItems()
				.filter(function (item) {
					return item.name.indexOf('Filtered') < 0;
				});
		});
		vm.draggableComputedItems = ko.computed(function () { return vm.underlayingDraggableComputedItems(); });

		ko.applyBindings(vm);
	</script>
</body>
</html>