Question

我有一个输入字段，用于保存项目的数量。如果用户更改数量值，我想更新会话中存储的值。我的问题是我无法获得＆＃34;值＆＃34;。

<form method="post">
    <input type="number" class="form-control text-center" name="quantityInput" size="1" maxlength="2" value="'.$cart_itemDisplay['quantity'].'">
    <button class="btn btn-info btn-sm" method="POST" name="refreshBtn"><i class="fa fa-refresh"></i></button>
</form>

当我尝试存储值时：

$quantityOfItemToAdjust = $_POST['quantityInput'];

完整代码：

echo '
                                        <tbody>
                                            <tr>
                                                <td data-th="Product">
                                                    <div class="row">
                                                        <div class="col-sm-2 hidden-xs"><img src="img/movies/'.$imageName.'" alt="..." class="img-responsive"/></div>
                                                        <div class="col-sm-10">
                                                            <h4 class="nomargin">'.$nameOfProduct.'</h4>
                                                            <p>'.$productDesc.'</p>
                                                        </div>
                                                    </div>
                                                </td>
                                                <td data-th="Price">£'.$priceOfItem.'</td>
                                                <td data-th="Quantity">
                                                    <form method="post" action="tickets.php">
                                                        <input type="number" class="form-control text-center" name="quantityInput" size="1" maxlength="2" value="'.$cart_itemDisplay['quantity'].'">

                                                    </form>
                                                    </td>
                                                <td data-th="Subtotal" class="text-center">1.99</td>
                                                <td class="actions" data-th="">

                                                    <form method="post" action="tickets.php">
                                                        <button class="btn btn-info btn-sm" method="submit" name="refreshBtn"><i class="fa fa-refresh"></i></button>
                                                        <input name="item_to_adjust" type="hidden" value="'.$idOfItem.'"/>




                                                        <button class="btn btn-danger btn-sm"><i class="fa fa-trash-o"></i></button>    
                                                    </form>


                                                </td>
                                            </tr>
                                        </tbody>
                                        ';

Answer 1

您应该使用提交而不是按钮，表单需要操作。

<form method="post" action="yourpage.php">
<input type="number" class="form-control text-center" name="quantityInput" size="1" maxlength="2" value="'.$cart_itemDisplay['quantity'].'">
<input type="submit" class="btn btn-info btn-sm" name="refreshBtn" value="Refresh">
</form>

这应该有用。

如何从输入类型显示值=＆＃34;数字＆＃34;

1 个答案: