如何根据增量和减量按钮的输入显示多次输入的卡片？

Question

我有一个带有递增和递减按钮的代码：<div class="form-group border-dark" id="quantity">  <label class="text-center"><strong>Quantity:</strong></label><br> <span class= "btn-danger quantity-decrement fa fa-minus"> </span>          <input type="text" class="quantity" id="quant" name="quant" value="1" min="1" max="100" disabled>           <span class= "btn-info quantity-increment fa fa-plus"> </span>   </div>另一个像这样：    <div style="display:none" class = "eventdetail">    <div class="card" style="padding-left:0px;">        <div class="card-body">            <label class="pull-right" id="none"></label>           <label id="con"></label><br>            <label><b>Individual Details:</b></label>             <div class="form-inline">                <div class="form-group border-dark">                   <input type="text" class="form-control" name="epname[]" placeholder="Enter individual's Full Name">                </div>                <div class="form-group border-dark">                   <input type="email" class="form-control" name="epmail[]" placeholder="Enter individual's Email">                </div>                <div class="form-group border-dark">                   <input type="tel" class="form-control" name="epnubmer[]" placeholder="Enter individual's Phone Number">                </div>             </div>            <section class="row">                <div align="center">                      <a class="btn btn-outline-dark remove" >Remove Ticket</a>                </div>             </section>                                 </div>     </div></div> <div id = "eventdisplay"> </div>我希望#eventdetail 显示我在#eventdisplay 中使用增量按钮所做的次数。请问我该怎么做？