bootstrap模态框远程加载网页的正确处理方式

$("#modal").modal({
    remote: "tieniu.php"
});

<a data-toggle="modal" href="tieniu.php" data-target="#modal">Click me</a>
<div class="modal" id="modal">
        <div class="modal-dialog">
            <div class="modal-content">
                  <!--这里是远程加载过过来的内容区-->  
         </div>
        </div>
 </div>
    

<?php $rnd=rand(1000,9999);?>
<div class="modal-header">
    <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
     <h4 class="modal-title">Modal title</h4>
</div>
<div class="modal-body">
    <?php echo $rnd;?>
</div>
<div class="modal-footer">
    <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
    <button type="button" class="btn btn-primary">Save changes</button>
</div>

 $(document).ready(function () {
     $("#modal").on("hidden.bs.modal", function() {
     $(this).removeData("bs.modal");
 });
})