Last Bootstrap tooltip doesn't work

Question

This is my HTML code:

<table>
    <tr class="primary">
        <td>1</td>
        <td>Name</td>
        <td>
            <a data-toogle="tooltip" data-placement="bottom" title="Add user" href="#/tutoria/add/1" class="glyphicon glyphicon-plus glyphicon-lg **tooltips** add-user" data-original-title="Agregar usuario"></a> 
        </td>
    </tr>
    <--!The last tooltip that I've in my table (tr) doesn't work-->
    <tr class="primary">
        <td>2</td>
        <td>Name</td>
        <td>
            <a data-toogle="tooltip" data-placement="bottom" title="Add user" href="#/tutoria/add/2" class="glyphicon glyphicon-plus glyphicon-lg **tooltips** add-user"></a> 
        </td>
    </tr>
</table>

The JS code:

$(".tooltips").tooltip();

I'm implementing Bootstrap with Backbone and I've this problem: all the tooltips (Bootstrap) work fine, unless the tooltips that I've in the last row of the table.

Answer 1

I just added

<script src="http://getbootstrap.com/assets/js/docs.min.js"></script>

below bootstrap.min.js and it works.