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copied!<p>For those (like me) who need a SSCCE working; the solution follow's [cybermotron] suggestion, also fixes an issue where handlers expect prarameters <em>data</em> and <em>event</em>.</p> <p><a href="http://jsfiddle.net/marrok/m63aJ/" rel="nofollow">http://jsfiddle.net/marrok/m63aJ/</a></p> <p>HTML</p> <pre><code><script type="application/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <ul id="people" data-bind='template: { name: "personTmpl", foreach: people }'> </ul> <div class="trash" data-bind ="visible:dragging, event:{ dragover: function(data, event){ event.preventDefault(); }, drop: function(data, event){ console.log('trash', $root.drag_start_index()) $root.trash($root.drag_start_index()) event.preventDefault(); } }"> <span>DELETE</span> </div> <script id="personTmpl" type="text/html"> <li class="draggable" draggable="true" data-bind="event:{ dragstart: function(data, event){ $(event.target).addClass('dragSource') $root.drag_start_index($index()); return $(event.target).hasClass('draggable');}, dragend: function(data, event){ $root.drag_start_index(-1); $(event.target).removeClass('dragSource') return true; }, dragover: function(data, event){event.preventDefault();}, dragenter: function(data, event){ $root.drag_target_index($index()); var element = $(event.target) if(element.hasClass('draggable')) element.toggleClass('dragover'); event.preventDefault(); }, dragleave: function(data, event, $index){ var element = $(event.target) if(element.hasClass('draggable')) element.toggleClass('dragover'); event.preventDefault(); }, drop: function(data, event){ $(event.target).removeClass('dragover'); console.log('swap', $root.drag_start_index(), $root.drag_target_index() ) $root.swap($root.drag_start_index(), $root.drag_target_index()) } }"> <span data-bind='text: name'></span> </li> </script> </code></pre> <p>Knockout </p> <pre><code>var Person = function(name) { this.name = ko.observable(name); }; var PeopleModel = function() { var self = this; self.drag_start_index = ko.observable(); self.drag_target_index = ko.observable(); self.dragging = ko.computed(function() { return self.drag_start_index() >= 0; }); self.people = ko.observableArray([ new Person("Oleh"), new Person("Nick C."), new Person("Don"), new Person("Ted"), new Person("Ben"), new Person("Joe"), new Person("Ali"), new Person("Ken"), new Person("Doug"), new Person("Ann"), new Person("Eve"), new Person("Hal")]); self.trash = function(index) { self.people.splice(index, 1) } self.swap = function(from, to) { if (to > self.people().length - 1 || to < 0) return; var fromObj = self.people()[from]; var toObj = self.people()[to]; self.people()[to] = fromObj; self.people()[from] = toObj; self.people.valueHasMutated() } }; ko.applyBindings(new PeopleModel()); </code></pre>

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