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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.

Outputs an error message to the Web Console.

Note: This feature is available in Web Workers.

Syntax

console.error(obj1 [, obj2, ..., objN]);
console.error(msg [, subst1, ..., substN]);
console.exception(obj1 [, obj2, ..., objN]);
console.exception(msg [, subst1, ..., substN]);

Note: console.exception() is an alias for console.error(); they are functionally identical.

Parameters

obj1 ... objN
A list of JavaScript objects to output. The string representations of each of these objects are appended together in the order listed and output.
msg
A JavaScript string containing zero or more substitution strings.
subst1 ... substN
JavaScript objects with which to replace substitution strings within msg. This gives you additional control over the format of the output.

See Outputting text to the console in the documentation of console for details.

Specifications

Specification Status Comment
Console API
The definition of 'console.error()' in that specification.
Editor's Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) 4.0 (2.0) 8 (Yes) (Yes)
Substitution strings (Yes) 9.0 (9.0) ? ? ?
console.exception alias Not supported 28.0 (28.0) Not supported Not supported Not supported
Available in workers ? 38.0 (38.0) ? ? ?
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) 4.0 (2.0) ? ? ?
Substitution strings ? 9.0 (9.0) ? ? ?
console.exception alias Not supported 28.0 (28.0) Not supported Not supported Not supported
Available in workers ? 38.0 (38.0) ? ? ?

See also

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