JSFiddle - React, Tailwind, and code Playground
HTML
<table>
<tr>
<td>col #1</td>
<td>col #2</td>
<td>
<button type="button">click me</button>
</td>
</tr>
</table>
JavaScript
$("button").click(function() {
var $td = $(this).closest('tr').children("td"),
len = $td.length;
var tableData = $td.map(function(i) {
if(i < len -1)
return $(this).text();
}).get();
console.log(tableData);
});