I found the answer to my question. I used the "visualizer" in handsontable mode to make a cell in HTML
columns: [
{data: "unique_no"},
{data: "title"},
{data: "subject"},
{data: "year"},
{data: "duration"},
{data: "color"},
{data: "language"},
{data: "synopsis"},
{data: "director"},
{data: "basic_format"},
{data: "created_at"},
{data: "updated_at"},
{data: "action", renderer: "html",readOnly: true}
],
Here I found it http://handsontable.com/demo/renderers_html.html#dropdown
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