Question

晚上好。我创建一个PHP页面将通过一个目录并将图片插入到表中。这些图片将是一个选择下拉框和一个数量文本输入。每个表单元素在创建时根据文件名称命名。我似乎无法将数量值传递给javascript。请帮忙）。我的代码发布在下面。

for ($i=0; $i<count($files); $i++) {
    echo $_POST[bandSelect];
    if ($i%3 ==0 && $i!=0) {
        echo '</tr><tr>';
    }
    $pricewallets = "$7.50"; $price3x5 = "$2.00";
    $price4x6 = "$3.00";     $price5x7 = "$4.00";
    $price8x10 = "$9.00";    $price11x14 = "$14.75";
    $price12x18 = "$20.00";  $price16x20 = "$27.00";  
    $price18x24 = "$28.20";

    $num = $files[$i];
    list($width, $height, $type, $attr) = getimagesize($files[$i]);
    echo '<td style="text-align:center;"><a href="'.$num.'" target="_blank">
        <img src="'.$num.'" width ="'.($width/4).'" alt="random image"></a>';

    $fileName = basename($num);
    $qty = $num."qty";
    echo "<br />".$fileName;
    echo '<br /><select name="'.$num.'" id="'.$num.'">
        <option value="'.$num.'Wallets">Wallets (8)</option>
        <option value="'.$num.'3x5">3" x 5"</option>
        <option value="'.$num.'4x6">4" x 6"</option>
        <option value="'.$num.'5x7">5" x 7"</option>
        <option value="'.$num.'11x14">11" x 14"</option>
        <option value="'.$num.'12x18">12" x 18"</option>
        <option value="'.$num.'16x20">16" x 20"</option>
        <option value="'.$num.'18x24">18" x 24"</option>
        </select>';
    echo '<input type="text" name="'.$qty.'" id="'.$qty.'" size="1" value="0" />
        <br />
        <input type="button" name="addCart" value="Add to cart" onclick="addcart( \''.$num.'\',\''.$fileName.'\',\''.$qty.'\')" />
    </td>';
}

这是我的Javascript

function addcart(name, filename, qty)
{
var e = document.getElementById(name);
var strUser = e.options[e.selectedIndex].text;
var price;
var salePrice;
switch (strUser)
{
case "Wallets (8)":
    salePrice = 7.5;
    price = "$7.50";
    break;

case "3\" x 5\"":
    salePrice = 2;
    price = "$2.00";
    break;

case "4\" x 6\"":
    salePrice = 3;
    price = "$3.00";
    break;

case "5\" x 7\"":
    salePrice = 4;
    price = "$4.00";
    break;

case "8\" x 10\"":
    salePrice = 9;
    price = "$9.00";
    break;

case "3\" x 5\"":
    salePrice = 2;
    price = "$2.00";
    break;

case "11\" x 14\"":
    salePrice = 14.75;
    price = "$14.75";
    break;

case "12\" x 18\"":
    salePrice = 20;
    price = "$20.00";
    break;

case "16\" x 20\"":
    salePrice = 27;
    price = "$27.00";
    break;

case "18\" x 24\"":
    salePrice = 28.5;
    price = "$28.50";
    break;
}
var cartTotal=document.picSelect.cart.value;
if(strUser!=="Wallets (8)")
{
document.picSelect.cart.value = cartTotal + " " + filename + " " + strUser + "\t " + price + " x " + qty + "\n";    
}
else
{
document.picSelect.cart.value = cartTotal + " " + filename + " " + strUser + " " + price + " x " + qty + "\n";
}
document.picSelect.Total.value = parseFloat(document.picSelect.Total.value) + salePrice * qty;
textTotal.innerHTML = "Your current  total is:\n\t$" +     parseFloat(document.picSelect.Total.value).toFixed(2);



 }

Answer 1

您忘记更改文本字段的值：

echo '<input type="text" name="'.$qty.'" id="'.$qty.'" size="1" value="'.$qty.'" />

将带有PHP变量名称的文本字段的值传递给Javascript

1 个答案: