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SecurityPolicyViolationEvent.effectiveDirective

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The effectiveDirective read-only property of the SecurityPolicyViolationEvent interface is a DOMString representing the directive whose enforcement uncovered the violation.

Syntax

let effDir = violationEventInstance.effectiveDirective;

Value

A DOMString representing the directive whose enforcement uncovered the violation.

Example

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

Specifications

Specification	Status	Comment
Content Security Policy Level 3 The definition of 'effectiveDirective' in that specification.	Working Draft	Initial definition

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	Yes	15	63 63 59 Disabled Disabled From version 59: this feature is behind the `security.csp.enable_violation_events` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	No	Yes	Yes