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POjQuery-UI: sortable() placeholder feel sticky
 

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  1. POjQuery-UI: sortable() placeholder feel sticky
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    <p>I'm trying to use <code>$.sortable</code> to implement a simple puzzle:</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/&gt; &lt;style&gt; span { display: inline-block; width: 1em; text-align: center; border: 1px solid; background: white; margin: 0 4px; } .vowel { color: red } .vowel:hover { cursor: pointer; background: red; color: white; } .word { padding: 5px } #words, #vowels{ float: left; clear: both; padding: 5px; margin: 5px; } #words { border: 1px solid black } #vowels { border: 2px solid red } #vowels .placeholder { display: none; } .word .placeholder { width: 4px; margin: -2px; background: pink; height: 1em; border: none; } &lt;/style&gt; &lt;script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"&gt;&lt;/script&gt; &lt;script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.18/jquery-ui.min.js"&gt;&lt;/script&gt; &lt;script&gt; $(function(){ $('#vowels,.word').disableSelection().sortable({ cursor: 'pointer', placeholder: 'placeholder', cancel: '.consonant', connectWith: '#vowels,.word', helper: 'clone', appendTo: 'body', stop: function(event, ui) { var $uiItem = $(ui.item); if ($uiItem.parent().is('#vowels')) $uiItem.remove(); } }); $('#vowels').bind('sortstart', function(event, ui){ var $uiItem = $(ui.item); $uiItem.clone().show().insertBefore($uiItem); }); }); &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="vowels"&gt; &lt;span class="vowel"&gt;A&lt;/span&gt; &lt;span class="vowel"&gt;E&lt;/span&gt; &lt;span class="vowel"&gt;I&lt;/span&gt; &lt;span class="vowel"&gt;O&lt;/span&gt; &lt;span class="vowel"&gt;U&lt;/span&gt; &lt;span class="vowel"&gt;Y&lt;/span&gt; &lt;/div&gt; &lt;div id="words"&gt; &lt;div class="word"&gt; &lt;span class="consonant"&gt;H&lt;/span&gt; &lt;span class="consonant"&gt;P&lt;/span&gt; &lt;span class="consonant"&gt;P&lt;/span&gt; &lt;/div&gt; &lt;div class="word"&gt; &lt;span class="consonant"&gt;B&lt;/span&gt; &lt;span class="consonant"&gt;S&lt;/span&gt; &lt;span class="consonant"&gt;H&lt;/span&gt; &lt;span class="consonant"&gt;F&lt;/span&gt; &lt;span class="consonant"&gt;L&lt;/span&gt; &lt;/div&gt; &lt;div class="word"&gt; &lt;span class="consonant"&gt;D&lt;/span&gt; &lt;span class="consonant"&gt;C&lt;/span&gt; &lt;/div&gt; &lt;div class="word"&gt; &lt;span class="consonant"&gt;G&lt;/span&gt; &lt;span class="consonant"&gt;R&lt;/span&gt; &lt;span class="consonant"&gt;M&lt;/span&gt; &lt;span class="consonant"&gt;P&lt;/span&gt; &lt;/div&gt; &lt;div class="word"&gt; &lt;span class="consonant"&gt;D&lt;/span&gt; &lt;span class="consonant"&gt;P&lt;/span&gt; &lt;/div&gt; &lt;div class="word"&gt; &lt;span class="consonant"&gt;S&lt;/span&gt; &lt;span class="consonant"&gt;N&lt;/span&gt; &lt;span class="consonant"&gt;Z&lt;/span&gt; &lt;/div&gt; &lt;div class="word"&gt; &lt;span class="consonant"&gt;S&lt;/span&gt; &lt;span class="consonant"&gt;L&lt;/span&gt; &lt;span class="consonant"&gt;P&lt;/span&gt; &lt;/div&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>And while it works, it doesn't work quite as well as I could wish. I can drag the letters about, but the placheholder doesn't move as smoothly as I could wish, occasionally sticking in a certain location.</p> <p>Is there anything I can do to make it move more smoothly?</p>
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