Web/API/SecurityPolicyViolationEvent/sample

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

The sample read-only property of the SecurityPolicyViolationEvent interface is a DOMString representing a sample of the resource that caused the violation.

Syntax

let sample = violationEventInstance.sample;

Value

A DOMString containing a sample of the resource that caused the violation, usually the first 40 characters. This will only be populated if the resource is an inline script, event handler, or style — external resources causing a violation will not generate a sample.

Example

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

Specifications

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

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`sample`	Chrome Full support 59	Edge Full support ≤18	Firefox Full support 63 Full support 63 Full support 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.	IE No support No	Opera Full support 46	Safari Full support Yes	WebView Android Full support 59	Chrome Android Full support 59	Firefox Android Full support 63 Full support 63 Full support 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.	Opera Android Full support 43	Safari iOS Full support Yes	Samsung Internet Android Full support 7.0

Legend

Full support: Full support
No support: No support
User must explicitly enable this feature.': User must explicitly enable this feature.