[jQuery] validating dynamically generated data

[jQuery] validating dynamically generated data


I need to validate some dynamically generated form data to ensure clients
can't order more of something than we have in stock. I can't set static
comparisons. Here is my html:
<form action="addtocart.php" method="post">
<input type="submit" class="addtocart" value="add selected items to cart" />

<div class="instock">
<h4>manual 1</h4>
<div class="qty" title="90">90</div>
<input name="150" type="text" id="150" class="order-qty" /><label
for="150">Qty:</label>
</div>
<div class="instock">
<h4>manual 2</h4>
<div class="qty" title="48">48</div>
<input name="151" type="text" id="151" class="order-qty" /><label
for="151">Qty:</label>
</div>

</form>

I want to validate on keyup(). In rough pseudocode, something like this:
$(document).keyup(function(event){
if (($this.getValue(input)) > ($this.getValue(span.qty))) {
addText("Not enough in stock");
}
});
I know that's not even close. Could someone help me?
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