This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The lineNumber read-only property of the SecurityPolicyViolationEvent interface is the line number in the document or worker at which the violation occurred.
Syntax
let lineNumber = violationEventInstance.lineNumber;
Value
A number representing the line number at which the violation occurred.
Example
document.addEventListener("securitypolicyviolation", (e) => {
console.log(e.lineNumber);
});
Specifications
| Specification | Status | Comment |
|---|---|---|
| Content Security Policy Level 3 The definition of 'lineNumber' in that specification. |
Working Draft | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | Yes | 15 | 591 | No | Yes | Yes |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | Yes | Yes | Yes | 591 | Yes | Yes | Yes |
1. 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.
See also
Document Tags and Contributors
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Contributors to this page:
fscholz,
chrisdavidmills
Last updated by:
fscholz,