mirror of
https://github.com/nodejs/node.git
synced 2024-11-28 22:46:31 +01:00
55 lines
1.0 KiB
Markdown
55 lines
1.0 KiB
Markdown
## console
|
|
|
|
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()`.
|
|
|