Name
ReferenceError: thrown when reading a variable that does not exist â ECMAScript v3: Object â Error â ReferenceError
Constructor
new ReferenceError( )
new ReferenceError(message
)
Arguments
-
message
An optional error message that provides details about the exception. If specified, this argument is used as the value for the
message
property of the ReferenceError object.
Returns
A newly constructed ReferenceError object. If the
message
argument is specified, the
Error object uses it as the value of its message
property; otherwise, it uses an
implementation-defined default string as the value of that
property. When the ReferenceError(
)
constructor is called as a function, without the
new
operator, it behaves just
as it would with the new
operator.
Properties
-
message
An error message that provides details about the exception. This property holds the string passed to the constructor or an implementation-defined default string. See
Error.message
for details.-
name
A string that specifies the type of the exception. All ReferenceError objects inherit the value âReferenceErrorâ for this property.
Description
An instance of the ReferenceError class is thrown when you
attempt to read the value of a variable that does not exist. See
Error
for details about throwing
and catching exceptions.
See Also
Error, Error.message, Error.name
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