显示模态而不是回显消息

Question

if (mysqli_num_rows($res_username) > 0) {
    //echo "Sorry... Username already taken";
    echo "<script>$('#RegisterModal').modal('show')</script>";
}

<div id="RegisterModal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-sm">
        <div class="modal-content">
            You have sucess registered!
        </div>
    </div>
</div>

For the echo part, I want to display a modal showing a popup instead of a echo message. Anybody help?

Answer 1

Enclose your script in $(document).ready() so your show command executes only when the document is fully loaded to limit failure.

Like:

echo "
  <script>
  $( document ).ready(function() {
  $('#RegisterModal').modal('show')
  });
  </script>";