Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
The columnNumber data property of an Error instance contains the column number in the line of the file that raised this error.
A positive integer.Property attributes of Error: columnNumberWritable yes Enumerable no Configurable yes
try {
throw new Error("Could not parse input");
} catch (err) {
console.log(err.columnNumber); // 9
}Not part of any standard.