我在 Codeigniter 中有一个页面,我可以在其中设置客户想要购买的产品数量(平方米)。当客户设置数量时,我必须进行一些计算(关于之前设置的数量),并且我正在使用 Javascript 设置一些变量。现在我想在同一个(php)页面中显示这些变量并且它正在工作,但我不知道我应该怎么做才能将这些变量放在隐藏输入的值中,以便我可以将它们发送到控制器。这是编码:
<input type="text" name="productQuantity">
<input type="button" class="button" onclick="return showHide();" value="Calculate Packs">
<script type="text/javascript" language="javascript">// <![CDATA[
function showHide() {
var ele = document.getElementById("showHideDiv");
if(ele.style.display == "block") {
ele.style.display = "none";
}
else {
<?php $pack = explode(' ', $pro->productPackSize); ?>
ele.style.display = "block";
var val = document.getElementById('productQuantity').value;
document.getElementById('val').innerHTML = val;
var req = Math.round(val/<?php echo $pack[0]; ?>);
document.getElementById('req').innerHTML = req;
var total = req * <?php echo $pack[0]; ?>;
document.getElementById('total').innerHTML = total;
}
}
// ]]></script>
<div id="showHideDiv" style="display:none;">
<?php echo form_open('main/add_to_cart_validation/' . $pro->productId); ?>
To cover <strong id="val"></strong> sq.m, you will need <strong id="req"></strong> Packs
which is <strong id="total"></strong> sq.m in total</a> //the ids' here are working, i can show them in the page
<input type="hidden" id="" value="" name="productPacks"> //how can i get the 'reg' variable here?
<input type="hidden" id="" value="" name="productQuantity"> //the same here as above for 'total' variable
<input type="submit" class="button" value="Add to Cart">
</form>
</div>
感谢您的回答