jQuery add thead to the table

Question

I am using MyFaces Trinidad JSF framework and it creates tr:table as follows:

<table id="myTable">
    <tbody>
        <tr>
            <th>1</th>
            <th>2</th>
            <th>3</th>
        </tr>
        <tr>
            <td>1</td>
            <td>2</td>
            <td>3</td>
        </tr>
        <tr>
            <td>1</td>
            <td>2</td>
            <td>3</td>
        </tr>
    </tbody>
</table>

I need the below one to implement scrollable header. So I am trying to convert them using jQuery

<table id="myTable">
    <thead>
        <tr>
            <th>1</th>
            <th>2</th>
            <th>3</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>1</td>
            <td>2</td>
            <td>3</td>
        </tr>
        <tr>
            <td>1</td>
            <td>2</td>
            <td>3</td>
        </tr>
    </tbody>
</table>

I have tried this and this answers, but none of them solves my problem.

Answer 1

Wrap first row with thead and append at the beginning of the table

 $('#myTable tbody tr:first') // get first row //.detach() // remove from table, it's optional to detach .wrap('<thead/>') // wrap with tbody .parent() // get tbody .prependTo('#myTable') // append at the beginning 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <table id="myTable"> <tbody> <tr><th>1</th><th>2</th><th>3</th><th>4</th></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr> </tbody> </table> 

Answer 2

you can use

// append the first row to thead and prepend thead to #mytable
$('<thead></thead>').append($('tbody > tr:nth-child(1)')).prependTo('#myTable');
// remove the first row from tbody
$('#myTable > tbody > tr:nth-child(1)').remove();

 // append the first row to thead and prepend thead to #mytable $('<thead></thead>').append($('tbody > tr:nth-child(1)')).prependTo('#myTable'); // remove the first row from tbody $('#myTable > tbody > tr:nth-child(1)').remove(); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <table id="myTable"> <tbody><tr><th>1</th><th>2</th><th>3</th><th>4</th></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr> <tr><td>1</td><td>2</td><td>3</td><td>4</td></tr></tbody> </table>