JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://lightswitch05.github.io/table-to-json/javascripts/jquery.tabletojson.min.js"></script>
<table id="students" border="1">
    <thead>
        <tr>
            <th>Name</th>
            <th>Age</th>
            <th>Grade</th>
        </tr>
    </thead>
    <tbody>
        <tr class="student">
            <td>Oscar</td>
            <td>23</td>
            <td>16.5</td>        
        </tr>
        <tr class="student">
            <td>Antonio</td>
            <td>32</td>
            <td>14</td>        
        </tr>
        <tr class="student">
            <td>Jessica</td>
            <td>21</td>
            <td>19</td>        
        </tr>
    </tbody>
</table>

<button id="run">Convert!</button>

JavaScript

$('#run').click( function() {
 var table = $('#students').tableToJSON();
 alert(JSON.stringify(table));  
});