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nodejs/doc/api/stdio.markdown
2012-02-29 16:04:53 -08:00

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# console
* {Object}
<!--type=global-->
For printing to stdout and stderr. Similar to the console object functions
provided by most web browsers, here the output is sent to stdout or stderr.
## console.log()
Prints to stdout with newline. This function can take multiple arguments in a
`printf()`-like way. Example:
console.log('count: %d', count);
If formatting elements are not found in the first string then `util.inspect`
is used on each argument.
See [util.format()](util.html#util.format) for more information.
## console.info()
Same as `console.log`.
## console.warn()
## console.error()
Same as `console.log` but prints to stderr.
## console.dir(obj)
Uses `util.inspect` on `obj` and prints resulting string to stderr.
## console.time(label)
Mark a time.
## console.timeEnd(label)
Finish timer, record output. Example
console.time('100-elements');
for (var i = 0; i < 100; i++) {
;
}
console.timeEnd('100-elements');
## console.trace()
Print a stack trace to stderr of the current position.
## console.assert()
Same as `assert.ok()`.