Note: This feature is available in Web Workers.
The colno read-only property of the ErrorEvent interface returns an integer containing the column number of the script file on which the error occurred.
An integer.
window.addEventListener("error", (ev) => {
console.log(`The error occur in column: ${ev.colno}`);
});
| Specification |
|---|
| HTML> # dom-errorevent-colno> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
colno |
30 | 12 | 31 | 17 | 8 | 30 | 31 | 18 | 8 | 2.0 | 4.4 | 8 |
© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ErrorEvent/colno