javascript - jQuery drag and drop extend item -

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i trying create html table in can drag , drop items cell cell. managed find related code , modified example , result:

html:

<table id="#our_table" border="1"> <tr>     <th>column 1</th>     <th>column 2</th>     <th>column 3</th> </tr> <tr>     <td><span class="event" id="item1" draggable="true">item 1</span>     </td>     <td><span class="event" id="item2" draggable="true">item 2</span>         <span class="event" id="item3" draggable="true">item 3</span>     </td>     <td></td> </tr> <tr>     <td></td>     <td></td>     <td></td> </tr>

css:

    table th, table td {     width: 200px;     height:70px;     padding: 5px; } table span {     display:block;     background-color: #ccc;     border: 1px solid black;     color: fff;     height: 30px;     width: 100%; }

javascript:

        $(document).ready(function () {         $('.event').on("dragstart", function (event) {             var dt = event.originalevent.datatransfer;             dt.setdata('text', $(this).attr('id'));         });         $('table td').on("dragenter dragover drop", function (event) {             event.preventdefault();             if (event.type === 'drop') {                 var data = event.originalevent.datatransfer.getdata('text', $(this).attr('id'));                  de = $('#' + data).detach();                 if (event.originalevent.target.tagname === "span") {                     de.insertbefore($(event.originalevent.target));                 }                 else {                     de.appendto($(this));                 }             };         });     })

example here

  1. what need add is: extend span items horizontally on multiple cells on html table row drag , drop.
  2. click , hold right edge of span item , extend on 2 or more cells in row.

how can this?


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