Javascript 单击按钮时运行代码调用源代码：mutation-summary.js

我用tomcat编写jsp代码和运行代码。标记窗体中的标记按钮。代码如下：

<form action="" method="get">
<div class="minicart"> 
    <a href="#" class="minicart_link"> <span class="item"><b>0</b> ITEM /</span> <span class="price"><b></b></span> </a>
    <div class="cart_drop">
        <span class="darw"></span>
        <div class="minicart">
            <a href="#" class="minicart_link"> <span class="item"><b>0</b> ITEM /</span> <span class="price"><b>$ 0 VND</b></span></a>
            <div class="cart_drop">
                <span class="darw"></span>
                <ul>
                    <li>Mời Bạn Hãy Mua Hàng Của Chúng Tôi</li>
                    <div class="cart_bottom">
                        <div class="subtotal_menu"><small>Tổng Cộng:</small><big>$ 0 VND</big></div>
                        <a href="../pageofwebsite/giohang.jsp">Checkout</a>
                    </div>
                </ul>
            </div>
        </div>
    </div>
</div>

<div class="add_to_buttons">
  <button id="addToCart" class="add_cart" name="3">Add to Cart</button>
</div>

按钮的默认类型为提交。见此：

尝试将按钮更新为以下代码：

<button type="button" id="addToCart" class="add_cart" name="3">Add to Cart</button>

<button type="button" id="addToCart" class="add_cart" name="3">Add to Cart</button>