Difference between revisions of "GM.setValue"

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Strings, booleans, and integers are currently the only allowed data types.  
Strings, booleans, and integers are currently the only allowed data types.  
Values are saved in the [http://developer.mozilla.org/en/docs/Code_snippets:Preferences Firefox preferences] back end and can be manually changed by typing [[mozillazine:About:config|about:config]] in the address bar and searching for the preference name "<code>greasemonkey.scriptvals.[[Metadata_block#.40namespace|namespace]]/[[Metadata_block#.40name|name]].foo</code>".
Values are saved in the [http://developer.mozilla.org/en/docs/Code_snippets:Preferences Firefox preferences] back end and can be manually changed by typing [[mozillazine:About:config|about:config]] in the address bar and searching for the preference name "<code>greasemonkey.scriptvals.[[Metadata Block#.40namespace|namespace]]/[[Metadata Block#.40name|name]].foo</code>".


The Firefox preference store is not designed for storing large amounts of data. There are no hard limits, but very large amounts of data may cause Firefox to consume more memory and/or run more slowly.<sup>[[#Notes|[1]]]</sup>
The Firefox preference store is not designed for storing large amounts of data. There are no hard limits, but very large amounts of data may cause Firefox to consume more memory and/or run more slowly.<sup>[[#Notes|[1]]]</sup>

Revision as of 17:18, 3 February 2010


Description

This API method allows user script authors to persist simple values locally.

Strings, booleans, and integers are currently the only allowed data types. Values are saved in the Firefox preferences back end and can be manually changed by typing about:config in the address bar and searching for the preference name "greasemonkey.scriptvals.namespace/name.foo".

The Firefox preference store is not designed for storing large amounts of data. There are no hard limits, but very large amounts of data may cause Firefox to consume more memory and/or run more slowly.[1]


Syntax

GM_setValue( name, value )

Value: Function
Returns: undefined[2]
Compatibility: Greasemonkey 0.3b+
Parameters
Properties
name
value
  • All properties are optional except name and value.

Properties


name

Value: String
Usage: name = "PropertyName";
  • Property name to retrieve or create.


value

Value: String, Integer or Boolean
Usage: value = 5;


Examples

GM_setValue("foo", "bar");

See Also

Notes

[1] Please see this mailing list thread for details.