Question

当我选择产品时，“数量”已通过但未在“查看购物车”页面上的NUMBERS（1,2或3）中显示。

让我感到困惑的是为什么会这样？任何帮助将不胜感激。

我试图在两个文件视图购物车和add_Ajax中使用ajax传递数量值，但是它不显示我选择的数量。

<form method="GET" action="add_Ajax.php">
                        <input type="hidden" value="<?php echo $row[0];?>" name="id"> 
                    <div class="col-md-6">
                        <div class="product-body">
                            <div class="product-label">



        <div class="product-btns">
        <div class="qty-input">
                <span class="text-uppercase">QTY: </span>   <select name="q" id="q" style="position:absolute; margin-left:10px; margin-top:-5px;">


                                <option value="1">1</option>
                                <option value="2">2</option>
                                <option value="3">3</option>
                                <option value="4">4</option>
                                <option value="5">5</option>
                                <option value="6">6</option>
                                <option value="7">7</option>
                                <option value="8">8</option>
                                <option value="9">9</option>
                                <option value="10">10</option>



                                </select>
                                </div>


                                <script>
function additem(id,quantity)
{
    q_index  = document.getElementById("q").selectedIndex;
    q = document.getElementById("q").options[q_index].value;

    var xhttp = new XMLHttpRequest();
     xhttp.open("GET", "add_ajax.php?id="+id+"&quantity="+q, true);
  xhttp.send();
  xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
     // alert('item added');
    }
  };

}
</script>
                                <h3 style="margin-top:20px;">Tale :-</h3>
                                <p style="font-size:16px;"><?php echo $row[8];?></p>
              <button type="button" onClick="additem(<?php echo $row['id'];?>)" class="btn btn-info" data-toggle="modal" data-target="#myModal<?php echo $row['id'];?>">Add to cart</button>

  <div id="myModal<?php echo $row[0];?>" class="modal fade" role="dialog">
            <div class="modal-dialog">
                <div class="modal-content">
                    <div class="modal-header">
                         <button type="button" class="close" data-dismiss="modal">&times;</button>
                            <h4 class="modal-title">Details</h4>
                    </div>
                    <div class="modal-body">
            <p>Item Added to cart
                <?php echo $row[1];?>
                <?php echo $row[2];?>
                <?php echo $row[3];?>



              <a href="cart.php"> <button type="button" class="btn btn-info" >View Cart</button></a>
                <button type="button" class="btn btn-info" data-dismiss="modal">Continue Shopping</button>

                    </div>
                </div>
            </div>
        </div>
                            </form>

<---add_Ajax.php---->
session_start();
$id = $_GET['id'];
$quantity = $_GET['q'];
echo "<script>alert('".$quantity."');</script>";

    $con  = mysqli_connect("localhost","root","") or die(mysqli_error($con));
    mysqli_select_db($con,"booksjerry")  or die(mysqli_error($con));
    require_once("product.php");
    $quantity = isset($_GET['q']) ? $_GET['q'] : 1;
    $result = mysqli_query($con,"select * from products where id='".$id."'");
    $row = mysqli_fetch_array($result);

    $p = new product();
    $p->img = $row['image'];
    $p->id = $row['id'];
    $p->name = $row['name'];
    $p->price = $row['actualprice'];
    $p->quantity = $quantity;



    @$cart = unserialize(serialize($_SESSION['cart']));
print_r(@$cart);
    $index=-1;
    if($cart)
    {
        foreach(@$cart as $k=>$v)
        {
        if($v->id==$id)
        {
        $index = $k;
        echo $index;
        break;      
        }

        }
    }

    echo 'index: '.$index;
    if($index>=0)
    {
    $cart[$index]->quantity++;
    $_SESSION['cart']= $cart;

    @$c = (int) $_SESSION['count'];
    $c = $c+1;
    $_SESSION['count'] = $c;
    //echo "found".$index;
    }
        else
    {
    echo 'not found';
    $_SESSION['cart'][]= $p;
    $_SESSION['count'] = 1;
    }


    //$_SESSION['cart'][]= $p;
    //print_r($_SESSION['cart']);









if(isset($_GET['rem_id']))
{
    require_once("product.php");
    $id = $_GET['rem_id'];
    @$cart = unserialize(serialize($_SESSION['cart']));
    $index=  -1;
    foreach($cart as $k=>$v)
    {
        if($v->id==$id)
        {
        $index = $k;
        echo $index;
        break;      
        }

    }
    if($index>=0)
    {   
        unset($cart[$index]);
        $_SESSION['cart']= $cart;
    }
}
?>

我想从产品页面传递我选择的数量以查看购物车和add_Ajax，但是它没有显示我选择的数量，显示为1。

Answer 1

如果我答对了，那么您正在发送请求quantity参数。因此，您可以在add_Ajax.php中使用$_GET['quantity']而不是$_GET['q']来引用它。

但是，如果您更改

xhttp.open("GET", "add_ajax.php?id="+id+"&quantity="+q, true);

到

xhttp.open("GET", "add_ajax.php?id="+id+"&q="+q, true);

然后效果更好。：）

add_Ajax不显示我选择的数量

1 个答案: