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console

Top / console

JavaScript

• https://developer.mozilla.org/ja/docs/Web/API/Console
• http://getfirebug.com/wiki/index.php/Console_API

メモ

• Firebugで実装されていた機能だったがSafariやGoogle Chromeで標準搭載された
• IEには存在しない

メソッド

• console.assert?
• console.count? - 呼ばれた回数を返す
• console.debug?
• console.dir
• console.dirxml?
• console.error
• console.group
• console.groupCollapsed?
• console.groupEnd?
• console.info
• console.log
• console.markTimeline?
• console.profile?
• console.profileEnd?
• console.time? - time()〜timeEnd()までの間にある処理を計測する
• console.timeEnd?
• console.timeStamp?
• console.trace - スタックトレースを表示
• console.warn

機能の確認

for (var p in console) {
  console.log('console.' + p + '() is supported!');
}

関連

• window.console

参考

• http://blog.asial.co.jp/1036

カーネルパラメータ

• Linux/console
• 例

  console=tty02,115200n8

  console=	[KNL] Output console device and options.
  
  	tty<n>	Use the virtual console device <n>.
  
  	ttyS<n>[,options]
  	ttyUSB0[,options]
  		Use the specified serial port.  The options are of
  		the form "bbbbpnf", where "bbbb" is the baud rate,
  		"p" is parity ("n", "o", or "e"), "n" is number of
  		bits, and "f" is flow control ("r" for RTS or
  		omit it).  Default is "9600n8".
  
  		See Documentation/serial-console.txt for more
  		information.  See
  		Documentation/networking/netconsole.txt for an
  		alternative.
  
  	uart[8250],io,<addr>[,options]
  	uart[8250],mmio,<addr>[,options]
  		Start an early, polled-mode console on the 8250/16550
  		UART at the specified I/O port or MMIO address,
  		switching to the matching ttyS device later.  The
  		options are the same as for ttyS, above.
  
              If the device connected to the port is not a TTY but a braille
              device, prepend "brl," before the device type, for instance
  		console=brl,ttyS0
  	For now, only VisioBraille is supported.