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| {{DISPLAYTITLE:GM_log}}
| | As of Greasemonkey 4.0, this method has been removed. |
| | | You should use the [https://developer.mozilla.org/en-US/docs/Web/API/console.log console] instead. |
| <div style="border: 3px dotted; color: red; font-size: 1.2em; padding: 0.5em; margin: 1em; text-align: center">
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| '''This feature is deprecated ({{GitTicket|1819}}). Script authors are advised to use [https://developer.mozilla.org/en-US/docs/Web/API/console.log console logging] instead.'''
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| </div>
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| == Description ==
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| This method provides a very simple logging facility.
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| If you aren't seeing your messages, make sure you navigate to [[mozillazine:About:config|about:config]], and change the values of <code>javascript.options.showInConsole</code> and <code>javascript.options.strict</code> to true.
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| The output is displayed in the [https://developer.mozilla.org/en/Error_Console error console], and includes the namespace and name of the script before and the provided string value.
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| So, this script:
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| <pre class='sample'>
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| // ==UserScript==
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| // @name GM_log Example
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| // @namespace http://www.example.com/
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| // ==/UserScript==
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| GM_log("This is an example of GM_log");
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| </pre>
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| Will produce a line in the error console like:
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| <nowiki>http://www.example.com/GM_log Example: This is an example of GM_log</nowiki>
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| Compatibility: [[Version_history#0.3_beta|Greasemonkey 0.3b+]]
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| == Syntax ==
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| {{Function|GM_log|message}}
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| === Arguments ===
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| ; <code>message</code>
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| : <code>String</code> (or any object with a <code>.toString()</code> method) The message to display in the console.
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| === Returns ===
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| <code>undefined</code>
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| == Examples ==
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| <pre class='sample'>
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| GM_log("Hello, World!");
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| </pre>
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| <pre class='sample'>
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| GM_log("Warning, " + someInputField.value + "!");
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| </pre>
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| == GM_log and Firebug ==
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| GM_log does not work with Firebug's console anymore. Use <code>console.log</code> instead.
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| [[Category:API_Reference|L]]
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As of Greasemonkey 4.0, this method has been removed.
You should use the console instead.
