TypeError

Summary

The TypeError object represents an error when a value is not of the expected type.

Syntax

new TypeError([message[, fileName[,lineNumber]]])

Parameters

message
Human-readable description of the error
fileName
The name of the file containing the code that caused the exception
lineNumber
The line number of the code that caused the exception

Description

A TypeError is thrown when an operand or argument passed to a function is incompatible with the type expected by that operator or function.

Properties

TypeError.prototype
Allows the addition of properties to a TypeError object.

Methods

The global TypeError contains no methods of its own, however, it does inherit some methods through the prototype chain.

TypeError instances

Properties

TypeError.prototype.constructor
Specifies the function that created an instance's prototype.
TypeError.prototype.message
Error name. Although ECMA-262 specifies that TypeError should provide its own message property, in SpiderMonkey, it inherits Error.prototype.message.
TypeError.prototype.name
Error name. Inherited from Error.
TypeError.prototype.fileName
Path to file that raised this error. Inherited from Error.
TypeError.prototype.lineNumber
Line number in file that raised this error. Inherited from Error.
TypeError.prototype.columnNumber
Column number in line that raised this error. Inherited from Error.
TypeError.prototype.stack
Stack trace. Inherited from Error.

Methods

Although the TypeError prototype object does not contain any methods of its own, TypeError instances do inherit some methods through the prototype chain.

Specifications

Specification Status Comment
ECMAScript 3rd Edition. Standard Initial definition.
ECMAScript Language Specification 5.1th Edition (ECMA-262) Standard  
ECMAScript Language Specification 6th Edition (ECMA-262) Draft  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

See also

Document Tags and Contributors

Contributors to this page: Sheppy, Potappo, Sevenspade, fscholz
Last updated by: fscholz,