Error: lineNumber

The lineNumber data property of an Error instance contains the line number in the file that raised this error.

Value

A positive integer.

0

Examples

Using lineNumber

try {
  throw new Error("Could not parse input");
} catch (err) {
  console.log(err.lineNumber); // 2
}

Alternative example using error event

window.addEventListener("error", (e) => {
  console.log(e.lineNumber); // 5
});
const e = new Error("Could not parse input");
throw e;

This is not a standard feature and lacks widespread support. See the browser compatibility table below.

Specifications

Not part of any standard.

Browser compatibility

See also

• stack
• columnNumber
• fileName