Adding new row to the Django template table

I have a simple table generated from Django template variable:

{% for object in object_list %}
    <tr>
        <td class="c9">{{object.first_name}}</td>
        <td class="c9">{{object.last_name}}</td>
        <td class="c9">{{object.tel}}</td>
    </tr>
{% endfor %}

I’m making insert to this model and the server side is done, but how to add a new row in top of this table?
With this method: var row = table.insertRow(0)?
or can I change this variable ‘object_list’ and row will be added automatically?

This simple solution ‘var row = table.insertRow(0);’ is not adding columns with CSS classes.