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Error.prototype.name

The name data property of Error.prototype is shared by all Error instances. It represents the name for the type of error. For Error.prototype.name, the initial value is "Error". Subclasses like TypeError and SyntaxError provide their own name properties.

Value

A string. For Error.prototype.name, the initial value is "Error".

Property attributes of `Error.prototype.name`
Writable	yes
Enumerable	no
Configurable	yes

Description

By default, Error instances are given the name "Error". The name property, in addition to the message property, is used by the Error.prototype.toString() method to create a string representation of the error.

Examples

Throwing a custom error

const e = new Error("Malformed input"); // e.name is 'Error'

e.name = "ParseError";
throw e;
// e.toString() would return 'ParseError: Malformed input'

Specifications

Specification
ECMAScript Language Specification # sec-error.prototype.name

Browser compatibility