kartick14

<div class="discountcodefield"> 
  <label for="discount">Discount Code:</label> 
  <input autocomplete="off" type="hidden" name="discount" class="discount_code" />
  <input autocomplete="off" type="text" name="discount_code" class="discount_code_field" /> 
  <input type="button" name="apply_discount_code" class="btn discount_code_btn" value="Apply"/>
</div> 

<div class="cart__savings discount_apply_code">
</div>

atikju

<div class="cart-promo">
  <h2>ENTER A PROMO CODE</h2>
  <input type="text" id="devPromo">
  <a href="/checkout?discount=none" id="redemDevPromo">Apply Coupon</a>
</div>
<script>
  $(document).ready(function(){
    //listen to the promo button click
    $('#redemDevPromo').on('click', function(event){
      //disable the button event