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| {{extdev}}
| | See [https://developer.mozilla.org/en/Error_Console Error Console] at developer.mozilla.org. |
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| You can print information to JavaScript Console using the following method:
| | [[Category:Redirects]] |
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| <ol>
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| <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):
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| <pre>var gConsoleService = Components.classes['@mozilla.org/consoleservice;1']
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| .getService(Components.interfaces.nsIConsoleService);</pre>
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| (note, that you can use <tt>toJavaScriptConsole()</tt> function to open JavaScript console on startup)
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| </li>
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| <li>Define a function:
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| <pre>function myExt_logMessage(aMessage) {
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| gConsoleService.logStringMessage('My extension: ' + aMessage);
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| }</pre>
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| </li>
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| <li>Use it like here:
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| <pre>myExt_logMessage("Initialized.");</pre>
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| </li>
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| </ol>
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| See also: [[Viewing dump() output]], [http://www.mozilla.org/projects/xpcom/using-consoleservice.html Using Console service].
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| [[Category:Development]] [[Category:Example code|Printing to Javascript Console]]
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Latest revision as of 20:54, 30 April 2009
