<script

 src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/core.js">
</script>
                    <script type="text/javascript">
function clickButton(){
var phone=document.getElementById('phone').value;
var id=document.getElementById('id').value;
$.ajax({
        type:"post",
        url:"userDetaiAjax.php",
        data:
        {
           'phone' :phone,
           'id' :id
        },
        cache:false,
        success: function (html)
        {
           alert('Data Send');
           $('#msg').html(html);
        }
        });
        return false;
 }



 </script>
                        <div class="col">
                       <div class="form-group">
                    <h6><label>Name :</label> <?php echo $name ?></h6>
                                    <h6><label>Email :</label> <?php echo $email ?></h6>
                                    <input type="" name="phone" id="phone">
                                    <input type="" name="id" id="id" value="<?php echo $_SESSION["staff_id"];?>" hidden>
                                        <h6><label>Phone :</label> <?php echo $phone ?></h6>

                                         <input type="submit" name="aa" value="submit2" onclick="return clickButton();">

                                    </form>
                           <p id="msg"></p>



                        </div>
                          </div>
                           </div>
                              </div>