Bootstrap之javascript插件---弹出框（模态框）Modal

<!-- 弹出框的头部 -->
    <div class="modal fade">  
        <div class="modal-dialog">  
            <div class="modal-content">  
                <div class="modal-header">  
                    <button type="button" class="close" data-dismiss="modal">  
                        <span aria-hidden="true">&times;</span><span class="sr-only">Close</span>  
                    </button>  
                    <h4 class="modal-title">Modal title</h4>  
                </div>
<!-- 弹出框的内容   -->
                <div class="modal-body">  
                    ...  
                </div>  
<!-- 弹出框的底部 -->
                <div class="modal-footer">
<!-- 设置了data-dismiss="modal"属性，就可以关闭该弹出框 -->
                    <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>  
                    <button type="button" class="btn btn-primary">Save changes</button>  
                </div>  
            </div>  
        </div>  
    </div>