TypeError() constructor

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The TypeError() constructor creates TypeError objects.

Syntax

js
new TypeError()
new TypeError(message)
new TypeError(message, options)
new TypeError(message, fileName)
new TypeError(message, fileName, lineNumber)

TypeError()
TypeError(message)
TypeError(message, options)
TypeError(message, fileName)
TypeError(message, fileName, lineNumber)

Note: TypeError() can be called with or without new. Both create a new TypeError instance.

Parameters

message Optional

Human-readable description of the error

options Optional

An object that has the following properties:

cause Optional

A property indicating the specific cause of the error. When catching and re-throwing an error with a more-specific or useful error message, this property can be used to pass the original error.

fileName Optional

The name of the file containing the code that caused the exception

lineNumber Optional

The line number of the code that caused the exception

Examples

Catching a TypeError

js
try {
  null.f();
} catch (e) {
  console.log(e instanceof TypeError); // true
  console.log(e.message); // "null has no properties"
  console.log(e.name); // "TypeError"
  console.log(e.stack); // Stack of the error
}

Creating a TypeError

js
try {
  throw new TypeError("Hello");
} catch (e) {
  console.log(e instanceof TypeError); // true
  console.log(e.message); // "Hello"
  console.log(e.name); // "TypeError"
  console.log(e.stack); // Stack of the error
}

Specifications

Specification
ECMAScript Language Specification
# sec-nativeerror-constructors

Browser compatibility

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See also