javascript - Jquery ui sortable doesn't sort on half-top-height drag -


solved: containment: $("#sortable").parent().parent();

update: here video explanation this.

i don't know how ask question, don't know how works neither need little here:

when drag second item list , lets item height 50px, when click , drag 0-25px top bottom on item drag first place, first 1 move down, if click , drag 26-50px top bottom on item , try move on first place first item doesn't go down.

now guessing works mouse position , half item height if mouse position on not dragging item less 50% item height moves down, otherwise doesn't move.

how can change in way maybe lock dragging item mouse on 50% top position or ever clicked , moved on element move down?

<!doctype html>  <html lang="en">  <head>    <meta charset="utf-8">    <meta name="viewport" content="width=device-width, initial-scale=1">    <title>jquery ui sortable - default functionality</title>    <link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">    <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">    <style>    #sortable { list-style-type: none; margin: 0; padding: 0; width: 60%; }    #sortable li { margin: 0 3px 3px 3px; padding: 0.4em; padding-left: 1.5em; font-size: 1.4em; height: 18px; }    #sortable li span { position: absolute; margin-left: -1.3em; }   div{      width: 60%;      height: auto;      padding: 20px 0;      background: red;   }   </style>    <script src="https://code.jquery.com/jquery-1.12.4.js"></script>    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>    <script>    $( function() {      $( "#sortable" ).sortable({      	containment: $("#sortable").parent().parent(),       	update: function(){          	alert('dropped!');           }      });      $( "#sortable" ).disableselection();    } );    </script>  </head>  <body>  <div>  <ul id="sortable">    <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>item 1</li>    <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>item 2</li>    <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>item 3</li>    <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>item 4</li>    <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>item 5</li>    <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>item 6</li>    <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>item 7</li>  </ul>        </body>  </html>

when drag little 'up down' arrow works every time. try editing target or parent settings.


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