SecurityPolicyViolationEvent: referrer property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since August 2016.

Note: This feature is available in Web Workers.

The referrer read-only property of the SecurityPolicyViolationEvent interface is a string representing the referrer for the resources whose Content Security Policy (CSP) was violated. This will be a URL or null.

Value

A string representing the URL for the referrer of the resources whose policy was violated, or null.

Examples

js
document.addEventListener("securitypolicyviolation", (e) => {
  console.log(e.referrer);
});

Specifications

Specification
Content Security Policy Level 3
# dom-securitypolicyviolationevent-referrer

Browser compatibility

BCD tables only load in the browser

See also