Element: securitypolicyviolation event

{{APIRef("Reporting API")}}

The securitypolicyviolation event is fired when a Content Security Policy is violated.

The event is fired on the element when there is a violation of the CSP policy.

This event bubbles to the {{domxref("Window")}} object, and is composed.

[!NOTE] You should generally add the handler for this event to a top level object (i.e., {{domxref("Window")}} or {{domxref("Document")}} ). While HTML elements can technically be the target of the securitypolicyviolation event, in reality this event does not fire on them—for example, a blocked <img> source directly triggers this event on document as the target, instead of bubbling from the <img> element.

Syntax

Use the event name in methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}} , or set an event handler property.

addEventListener("securitypolicyviolation", (event) => { })

onsecuritypolicyviolation = (event) => { }

Event type

A {{domxref("SecurityPolicyViolationEvent")}} . Inherits from {{domxref("Event")}} .

{{InheritanceDiagram("SecurityPolicyViolationEvent")}}

Examples

Listening for securitypolicyviolation on Window

The code below shows how you might add an event handler function using the onsecuritypolicyviolation global event handler property or addEventListener() on the top level Window (you could use exactly the same approach on Document).

window.onsecuritypolicyviolation = (e) => {
  // Handle SecurityPolicyViolationEvent e here
};

window.addEventListener("securitypolicyviolation", (e) => {
  // Handle SecurityPolicyViolationEvent e here
});

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

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