动态改变形式动作？

Question

I think this question has been asked a few times and I did find a few on google too.

However I am not trying to change the whole form action. I just need to change it partially.

Here is what I mean:

I have the following form:

    <form action="order.php?add=<?php echo $product_name; ?>&amp;price=<?php echo $price; ?>&amp;qty=1" method="post">
        <input type="text" name="qty" id="qty" class="qty"  size="12"   />
        <input type="submit" class="button2" name="buttonadd" id="button" value="Add to cart" />
   </form>

what I need to do is to change the qty=1 in the form action so it reflects the <input type="text" name="qty" id="qty" class="qty" size="12" /> value!

How can I achieve this?

Answer 1

Set the Form method to 'get' (the thing that's now POST)

<form action="order.php" method="get">
    <input type="hidden" name="add" value="<?php echo $product_name ?>" />
    <input type="hidden" name="price" value="<?php echo $price ?>" />
    <input type="text" name="qty" id="qty" class="qty"  size="12"   />
    <input type="submit" class="button2" name="buttonadd" id="button" value="Add to cart" />
</form>

And there you have it! :)

(I also removed the other URL parameters and put them into hidden inputs. In my opinion, this is a much cleaner way to do this.)