Dev : Tips : Printing to JSConsole: Difference between revisions
From MozillaZine Knowledge Base
Jump to navigationJump to search
No edit summary |
(toJavaScriptConsole) |
||
Line 5: | Line 5: | ||
*Initialize it [[Dev : Extensions : onLoad|on load]]: | *Initialize it [[Dev : Extensions : onLoad|on load]]: | ||
aConsoleService = Components.classes['@mozilla.org/consoleservice;1'].getService(Components.interfaces.nsIConsoleService); | aConsoleService = Components.classes['@mozilla.org/consoleservice;1'].getService(Components.interfaces.nsIConsoleService); | ||
(note, you can also use toJavaScriptConsole() function to open JavaScript console on startup) | |||
*Define a function: | *Define a function: | ||
function logMessage(message) { | function logMessage(message) { | ||
Line 11: | Line 12: | ||
*Use it like here: | *Use it like here: | ||
logMessage('Initialized.'); | logMessage('Initialized.'); | ||
(thanks to clav, velcrospud and sage.mozdev.org for this) | |||
See also: [[Dev : Tips : Enabling dump|Using dump()]] | See also: [[Dev : Tips : Enabling dump|Using dump()]] |
Revision as of 22:34, 10 July 2004
You can output information to console using the following method:
- Declare global variable aConsoleService:
var aConsoleService;
- Initialize it on load:
aConsoleService = Components.classes['@mozilla.org/consoleservice;1'].getService(Components.interfaces.nsIConsoleService);
(note, you can also use toJavaScriptConsole() function to open JavaScript console on startup)
- Define a function:
function logMessage(message) { aConsoleService.logStringMessage('MyApp: ' + message); }
- Use it like here:
logMessage('Initialized.');
(thanks to clav, velcrospud and sage.mozdev.org for this)
See also: Using dump()