JSFiddle - React, Tailwind, and code Playground
HTML
<tr>
<td class='type'> Type name </td>
<td class='number'> 102030 </td>
<td class='software'> 1.0-Alpha </td>
<td ><button class='btnSelect'>Order</button></td>
</tr>
JavaScript
$(document).ready(function(){ // you may need to use document ready
$(".btnSelect").on('click',function(){
var data = $(this).parents('tr').find('.number').html();
alert(data);
});
});