Table of Contents

• console
  • console.log()
  • console.info()
  • console.warn()
  • console.error()
  • console.dir(obj)
  • console.time(label)
  • console.timeEnd(label)
  • console.trace()
  • console.assert()

console#

Stability: 4 - API Frozen

• {Object}

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() 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().