TypeError - JavaScript | MDN

Constructor

TypeError()

Creates a new TypeError object.

Instance properties

Also inherits instance properties from its parent Error.

These properties are defined on TypeError.prototype and shared by all TypeError instances.

TypeError.prototype.constructor

The constructor function that created the instance object. For TypeError instances, the initial value is the TypeError constructor.

TypeError.prototype.name

Represents the name for the type of error. For TypeError.prototype.name, the initial value is "TypeError".

Instance methods

Inherits instance methods from its parent Error.

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® 2026 Language Specification
# sec-native-error-types-used-in-this-standard-typeerror

Browser compatibility

See also

Help improve MDN

Learn how to contribute

This page was last modified on by MDN contributors.