Note: This feature is available in Web Workers.
The statusCode read-only property of the SecurityPolicyViolationEvent interface is a number representing the HTTP status code of the window or worker in which the Content Security Policy (CSP) violation occurred.
A number representing the status code of the window or worker in which the violation occurred.
document.addEventListener("securitypolicyviolation", (e) => {
console.log(e.statusCode);
});