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TypeError : Error

A TypeError is thrown when a value is a different type than what was expected.

Platform Support

IE Mozilla Netscape Opera Safari
5.0+ 1.0+ 6.0+ no no

Constructors

Constructor Action IE Mozilla Netscape Opera Safari
TypeError Constructor([String message]) : TypeError
Creates a new instance of TypeError.
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TypeError([String message]) : TypeError

Creates a new instance of TypeError.

Parameters

String message (optional)Error message that provides information about the exception.

Returns

TypeError

Inherited Properties

Property Action IE Mozilla Netscape Opera Safari
constructor : Object
Specifies the function that creates the Error prototype.
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Availability

JavaScript 1.5|JScript 5.0|ECMAScript v3

message : String
Error message.
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Availability

JavaScript 1.5|JScript 5.5|ECMAScript v3

name : String
Error name.
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Availability

JavaScript 1.5|JScript 5.5|ECMAScript v3

Properties

Property Action IE Mozilla Netscape Opera Safari
message : String
An error message associated with the TypeError.
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See Also

Error.message

Availability

JavaScript 1.5|JScript 5.5|ECMAScript v3

name : String
Specifies the type of exception.
Show Details 5.0+ 1.0+ 6.0+ no no
Availability

JavaScript 1.5|JScript 5.5|ECMAScript v3

Inherited Functions

Method Action IE Mozilla Netscape Opera Safari
toString() : String
Converts an Error object to a string.
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Returns

String
Availability

JavaScript 1.5|JScript 5.5|ECMAScript v3

Remarks

A TypeError is most commonly thrown when you try to access a value that is unexpectedly null or undefined. A TypeError can also be thrown if you use the operator on a value that is not a constructor or if you pass too many arguments to a built-in function.

References

Error|Error.message|Error.name

Availability

JavaScript 1.5|JScript 5.5|ECMAScript v3

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