mozilla

Error.prototype

The Error.prototype property represents the prototype for the Error constructor.

Property attributes of Error.prototype
Writable no
Enumerable no
Configurable no

Description

All Error instances and instances of non-generic errors inherit from Error.prototype. As with all constructor functions, you can use the prototype of the constructor to add properties or methods to all instances created with that constructor.

Properties

Standard properties

Error.prototype.constructor
Specifies the function that created an instance's prototype.
Error.prototype.message
Error message.
Error.prototype.name
Error name.

Vendor-specific extensions

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Microsoft

Error.prototype.description
Error description. Similar to message.
Error.prototype.number
Error number.

Mozilla

Error.prototype.fileName
Path to file that raised this error.
Error.prototype.lineNumber
Line number in file that raised this error.
Error.prototype.columnNumber
Column number in line that raised this error.
Error.prototype.stack
Stack trace.

Methods

Error.prototype.toSource()
Returns a string containing the source of the specified Error object; you can use this value to create a new object. Overrides the Object.prototype.toSource() method.
Error.prototype.toString()
Returns a string representing the specified object. Overrides the Object.prototype.toString() method.

Specifications

Specification Status Comment
ECMAScript 1st Edition (ECMA-262) Standard Initial definition. Implemented in JavaScript 1.1.
ECMAScript 5.1 (ECMA-262)
The definition of 'Error' in that specification.
Standard  
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Error' in that specification.
Standard  

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

Last updated by: fscholz,