What are some potential drawbacks of using JavaScript to read form data in a PHP webshop application?

One potential drawback of using JavaScript to read form data in a PHP webshop application is that it can lead to security vulnerabilities if the form data is not properly sanitized and validated before being processed by the server-side PHP code. To mitigate this risk, it is important to always perform server-side validation and sanitization of form data to prevent SQL injection, cross-site scripting, and other types of attacks. 

// Example of server-side validation and sanitization of form data
$name = isset($_POST['name']) ? htmlspecialchars($_POST['name']) : '';
$email = isset($_POST['email']) ? filter_var($_POST['email'], FILTER_SANITIZE_EMAIL) : '';
$quantity = isset($_POST['quantity']) ? intval($_POST['quantity']) : 0;

// Perform further validation and processing of the form data
// ...

Keywords

JavaScript form data PHP webshop application drawbacks

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