Difference between revisions of "GM log"

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(I want to scream.)
(Update for 4.0)
 
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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">
'''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.'''
</div>
 
== Description ==
 
This method provides a very simple logging facility.
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.
 
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.
So, this script:
 
<pre class='sample'>
// ==UserScript==
// @name          GM_log Example
// @namespace    http://www.example.com/
// ==/UserScript==
 
GM_log("This is an example of GM_log");
</pre>
 
Will produce a line in the error console like:
 
<nowiki>http://www.example.com/GM_log Example: This is an example of GM_log</nowiki>
 
Compatibility: [[Version_history#0.3_beta|Greasemonkey 0.3b+]]
 
== Syntax ==
 
{{Function|GM_log|message}}
 
=== Arguments ===
 
; <code>message</code>
: <code>String</code> (or any object with a <code>.toString()</code> method) The message to display in the console.
 
=== Returns ===
 
<code>undefined</code>
 
== Examples ==
 
<pre class='sample'>
GM_log("Hello, World!");
</pre>
 
<pre class='sample'>
GM_log("Warning, " + someInputField.value + "!");
</pre>
 
== GM_log and Firebug ==
 
GM_log does not work with Firebug's console anymore. Use <code>console.log</code> instead.
 
[[Category:API_Reference|L]]

Latest revision as of 10:03, 3 November 2017

As of Greasemonkey 4.0, this method has been removed. You should use the console instead.