Help with Javascript innerHtml please

I have a Javascript that is looping through a table's rows.  One of table cells (TD) contains a date.   Here's a sample:

<td class="ms-cellstyle ms-vb2"><span class="ms-noWrap" title="10/30/2015">10/30/2015</span></td>

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I have a variable named "col_date" which needs contain just the date (10/30/2015).

var col_date = row.cells[suspense_date_column].innerHTML;

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Right now col_date contains the whole  

<span class="ms-noWrap" title="10/30/2015">10/30/2015</span>

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.  How can I return just the date without the span tag?

Thanks