Error Console: Difference between revisions
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You can | {{extdev}} | ||
You can print information to JavaScript Console using the following method: | |||
<ol> | <ol> | ||
<li>Declare a | <li>Declare a variable (global if you're scripting your own window or [[Dev : Javascript coding guidelines|your object's member]] if you're overlaying an existing window): | ||
<pre>var gConsoleService = Components.classes['@mozilla.org/consoleservice;1'] | <pre>var gConsoleService = Components.classes['@mozilla.org/consoleservice;1'] | ||
.getService(Components.interfaces.nsIConsoleService);</pre> | .getService(Components.interfaces.nsIConsoleService);</pre> | ||
(note, you can | (note, that you can use <tt>toJavaScriptConsole()</tt> function to open JavaScript console on startup) | ||
</li> | </li> | ||
| Line 19: | Line 21: | ||
</ol> | </ol> | ||
See also: [[ | See also: [[Viewing dump() output]], [http://www.mozilla.org/projects/xpcom/using-consoleservice.html Using Console service]. | ||
[[Category:Development]] | |||
Revision as of 02:17, 19 December 2004
This page is part of the extension development documentation project.
Ask your questions in MozillaZine Forums. Also try browsing example code.
Note: development documentation is in process of being moved to Mozilla Development Center (MDC).
You can print information to JavaScript Console using the following method:
- Declare a variable (global if you're scripting your own window or your object's member if you're overlaying an existing window):
var gConsoleService = Components.classes['@mozilla.org/consoleservice;1'] .getService(Components.interfaces.nsIConsoleService);(note, that you can use toJavaScriptConsole() function to open JavaScript console on startup)
- Define a function:
function myExt_logMessage(aMessage) { gConsoleService.logStringMessage('My extension: ' + aMessage); } - Use it like here:
myExt_logMessage("Initialized.");
See also: Viewing dump() output, Using Console service.
