我正在尝试更改输入值并更新点击加号或减号按钮的总价。输入正在更新,但我的代码中的总价未更新。
<span class="qty-minus">-</span>
<input id="updates_large_{{ item.key }}" class="cart__qty-input" type="number" name="updates[]" value="{{ item.quantity }}" min="0" pattern="[0-9]* "data-quantity-input data-quantity-item="{{ forloop.index }}" data-quantity-input-desktop data-role="product-quantity-desktop">
<span class="qty-plus">+</span>
let qty_minus = document.querySelectorAll("span.qty-minus");
let qty_plus = document.querySelectorAll("span.qty-plus");
qty_minus.forEach(minus=>{
minus.addEventListener("click", ()=>{
if( minus.nextElementSibling.value;>1){
minus.nextElementSibling.value--;
};
});
});
qty_plus.forEach(plus=>{
plus.addEventListener("click", ()=>{
plus.previousElementSibling.value++;
});
});