Tips on programmatically updating the HTML Id while iterating through a loop

I need to extract the product id value from a hidden HTML input in order to utilize it within a JavaScript function.

Below is the HTML code that displays products along with their attributes:

{% for item in items %}
        <li class="first product has-post-thumbnail">
            <a href="#">
                <img src="{{asset('public/images/'~item.getImage())}}" 
                     class="attachment-shop_catalog" 
                     alt="The Zoomer Robot Dog Toy   1"/>
                <h3>{{ item.getName() }} {{ item.id }}</h3>
                <span class="price">
                    <span class="amount">{{item.getPrice() }}</span>
                </span>
                <input id='inpt".{{ item.id }}."' type="hidden" value="{{ item.id }}">
            </a>
            <a  rel="nofollow" id="slim" class="button 
                add_to_cart_button product_type_simple" 
                onclick="addToCart()">Add to cart</a>
        </li>

JavaScript Function for dynamically adding items to the shopping cart:

<script>
    var addToCart = (function() {
        var executed = false;
        return function() {
            if (!executed) {
                executed = true;
                var input = document.getElementById('inpt7').value;

                var urlEdit = "{{ path('addToCart', {'id': "id"})}";
            
                urlEdit = urlEdit.replace("id", input);
                $.ajax({
                    method: 'POST',
                    url: urlEdit,
                    ifModified: true,
                    success: function() {
                        console.log("Item added successfully");
                        alert("Item added to cart");
                    }
                });
                setTimeout(checkRequest, 5000);
            }
        };
    })();
</script>

Answer №1

Give this a try: Firstly, make sure to remove any extra quotation marks in the hidden field id so it matches this format

    <input id='inpt{{ product.id }}' type="hidden" value="{{ product.id }}">

Be sure to execute the script that retrieves the value from the field after the {{ }} expression is processed. If needed, place the script tag at the end of the same HTML page. Write it like this to retrieve the value using the eval() JavaScript function.

    <script type="text/javascript">
        var x = document.getElementById('inpt{{product.id}}');
        console.log(eval(x.value));
    </script>

Use the same approach when referencing an HTML element id. Hope this helps resolve your issue. Thank you!

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