我绝对是使用javascript和ajax的初学者,所以这就是我现在坚持的原因.我有一个while循环,其中有2个不同的按钮.就像我想象的一样,两者都起作用,除了一件小事…
product-id始终仅传递给第一个元素,或者如果我将其更改为最后一个元素则传递.
如何将正确的产品ID传递给脚本?
<?PHP while ( $product = $browse->fetch( PDO::FETCH_ASSOC ) ) :
$postid = $product[ 'id' ];
$userid = 1; ?>
<div id="content_<?PHP echo $postid ?>">
<div id="reload_<?PHP echo $postid ?>" class="row postfarbe browse">
<form method='post' action="" onsubmit="return add();">
<input type="hidden" id="userid" value="<?PHP echo $userid ?>" class="input-Box">
<input type="hidden" id="productid" value="<?PHP echo $postid ?>" class="input-Box">
<input type="hidden" id="collection" value="1" class="input-Box">
<input type="hidden" id="wish" value="0" class="input-Box">
<input type="submit" id="submit" value="Add to Collection" class="btn my-2 my-sm-0 btn-outline-dark btn-sm">
</form>
</div>
</div>
<?PHP endwhile; ?>
我的Javascript是:
function add()
{
var userid = document.getElementById("userid").value;
var productid = document.getElementById("productid").value;
var collection = document.getElementById("collection").value;
var wishlist = document.getElementById("wish").value;
if(userid && productid && collection && wishlist) {
$.ajax
({
type: 'post',
url: 'post_collection.PHP',
data: {
user_id:userid,
product_id:productid,
collection_id:collection,
wishlist_id:wishlist
},
success: function (response) {
$("#content_"+ productid).load(" #reload_" + productid);
}
});
}
return false;
}
</script>
我知道示例中的产品ID始终相同,但是如果循环中有10个或更多条目,如何将正确的ID传递给脚本?
解决方法:
您的问题是id是唯一的,并且只能分配给一个元素一次,如下所示:
<p id="paragraph"> This is legal </p>
<p id="paragraph"> This is illegal - It is no longer unique </p>
<p class="paragraph"> This is legal </p>
<p class="paragraph"> This is legal </p>
您可以使用$(this)来访问当前单击的类,如下所示:
$('.paragraph').click(function() {
$(this).html('See, totally legal.');
});
See this example可以看到它的使用.
您的解决方案需要向按钮添加onclick()
方法.然后,将得到parent()
表格.然后,您可以从类中获取find()
并从表单数据中获取val()
.
您的表单也正在提交操作.您需要有一个< button>类型的按钮,因此它不提交操作.这也必须是一个类,因为如果您要多次创建它们,它将不是唯一的.
$(document).ready(function() {
$('.submit-btn').click(function() {
var elements = {
'userid': $(this).parent().find('.userid').val(),
'productid': $(this).parent().find('.productid').val(),
'collection': $(this).parent().find('.collection').val(),
'wish': $(this).parent().find('.wish').val()
};
console.log("User ID: " + elements.userid);
console.log("Product ID: " + elements.productid);
console.log("Collection: " + elements.collection);
console.log("Wish: " + elements.wish);
// Todo: Add your AJAX request using these elements
});
});
button {
background: #0084ff;
border: none;
border-radius: 5px;
padding: 8px 14px;
font-size: 15px;
color: #fff;
cursor: pointer;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- This will be generated by PHP -->
<form method='POST'>
<input hidden class="userid input-Box" value="1">
<input hidden class="productid input-Box" value="1">
<input hidden class="collection input-Box" value="1">
<input hidden class="wish input-Box" value="1">
<button type="button" class="submit-btn btn my-2 my-sm-0 btn-outline-dark btn-sm"> Add to collection </button>
</form>
<!-- This will be generated by PHP -->
<br />
<form method='POST'>
<input hidden class="userid input-Box" value="2">
<input hidden class="productid input-Box" value="2">
<input hidden class="collection input-Box" value="2">
<input hidden class="wish input-Box" value="2">
<button type="button" class="submit-btn btn my-2 my-sm-0 btn-outline-dark btn-sm"> Add to collection </button>
</form>
您的AJAX数据如下所示:
data: {
user_id: elements.userid,
product_id: elements.productid,
collection_id: elements.collection,
wishlist_id: elements.wish
}
<?PHP foreach($browse->fetchAll(PDO::FETCH_ASSOC) as $product):
$id = $product['id'];
$productDd = $product['product_id'];
$productCategory = $product['category']; // Todo: change to your column nanme
$productWishList = $product['wish']; ?>
<div class="content_<?= $id; ?>">
<div class="reload_<?= $id; ?> row postfarbe browse">
<form method='POST'>
<input hidden class="userid input-Box" value="<?= $id; ?>">
<input hidden class="productid input-Box" value="<?= $productCategory; ?>">
<input hidden class="collection input-Box" value="<?= $productCollection; ?>">
<input hidden class="wish input-Box" value="<?= $productWishList; ?>">
<button type="button" class="submit-btn btn my-2 my-sm-0 btn-outline-dark btn-sm"> Add to collection </button>
</form>
</div>
</div>
<?PHP endforeach; ?>
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