The console method debug() outputs a message to the web console at the "debug" log level. The message is only displayed to the user if the console is configured to display debug output. In most cases, the log level is configured within the console UI. This log level might correspond to the `Debug` or `Verbose` log level

Note: This feature is available in Web Workers.


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


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 to the console.
A JavaScript string containing zero or more substitution strings, which are replaced with subst1 through substN in consecutive order.
subst1 ... substN
JavaScript objects with which to replace substitution strings within msg. This gives you additional control over the format of the output. See Using string substitutions in console for a description of how substitutions work.

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


Specification Status Comment
Console API
The definition of 'console.debug()' in that specification.
Living Standard Initial definition

Browser compatibility

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