The console.debug()
static method outputs a message to the console at the 'debug' log level.
The console.debug()
function is an alias for log.
Optional
message: anyThe console.error()
static method outputs a message to the console at the 'error' log level.
Prints to stderr
with newline. Multiple arguments can be passed, with the
first used as the primary message and all additional used as substitution
values similar to printf(3)
(the arguments are all passed to util.format()
).
const code = 5;
console.error('error #%d', code);
// Prints: error #5, to stderr
console.error('error', code);
// Prints: error 5, to stderr
If formatting elements (e.g. %d
) are not found in the first string then
util.inspect()
is called on each argument and the
resulting string values are concatenated. See util.format()
for more information.
Optional
message: anyThe console.info()
static method outputs a message to the console at the 'info' log level.
The console.info()
function is an alias for log.
Optional
message: anyThe console.log()
static method outputs a message to the console.
Prints to stdout
with newline. Multiple arguments can be passed, with the
first used as the primary message and all additional used as substitution
values similar to printf(3)
(the arguments are all passed to util.format()
).
const count = 5;
console.log('count: %d', count);
// Prints: count: 5, to stdout
console.log('count:', count);
// Prints: count: 5, to stdout
See util.format()
for more information.
Optional
message: anyThe console.warn()
static method outputs a warning message to the console at the 'warning' log level.
The console.warn()
function is an alias for error.
Optional
message: any
MDN Reference