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POSpotify Clear Playlist Drag and Drop
 

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    <p>When you drag/drop an Artist into my app in the sidebar, I build a temporary playlist. Every time I drag a new Artist into my app, it builds a new list after the previous, WITHOUT clearing out the old one. (Note there is some code missing from here that is probably not needed).</p> <p>My question: how do I clear out or remove the current built playlist THEN build a new one, every time I drag/drop an Artist into my app? I suspect it would need to be called inside getRelated()?</p> <pre><code> models.application.addEventListener('dropped', sidebarDropEventListener); function sidebarDropEventListener() { for(var i = 0; i &lt; models.application.dropped.length; i++){ var draggedItem = models.application.dropped[i]; updateFromDragged(draggedItem.uri); } } function updateFromDragged(droppedUri) { // If dropped item is an artist if(droppedUri.indexOf('artist') &gt;= 0) { getRelated(droppedUri); } else { console.warn('Dropped item is not an artist'); } } // Build playlist function buildList(trackURIArray){ var arr = trackURIArray; models.Playlist .createTemporary("myTempList_" + new Date().getTime()) .done(function (playlist){ playlist.load("tracks").done(function() { playlist.tracks.add.apply(playlist.tracks, arr).done(function(){ // Create list var list = List.forCollection(playlist); // Populate DOM $('#playlistContainer').append(list.node); list.init(); }); }); }); } // Get Related function getRelated(artist_uri){ models.Artist .fromURI(artist_uri) .load('related','name') .done(function (artist){ artist.related.snapshot().done(function (snapshot){ snapshot.loadAll().done(function (artists){ var promises = []; for(var i = 0; i &lt; artists.length; i++){ var promise = getTopTrack(artists[i], 1); promises.push(promise); } models.Promise.join(promises) .done(function (tracks){ buildList(tracks); }) .fail(function (tracks){ buildList(tracks); }); }); }); }); } </code></pre>
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