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