GM.setValue: Difference between revisions
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== Syntax == | == Syntax == | ||
{{Function| | {{Function|GM.setValue|name, value}} | ||
Compatibility: [[Version_history#4.0_2|Greasemonkey 4.0+]] | Compatibility: [[Version_history#4.0_2|Greasemonkey 4.0+]] | ||
Latest revision as of 00:26, 19 September 2018
Description
This method allows user script authors to persist simple values across page loads and across origins.
Strings, booleans, and integers are currently the only allowed data types.
Syntax
function GM.setValue( name, value )
Compatibility: Greasemonkey 4.0+
Arguments
nameStringThe unique (within this script) name for this value. Should be restricted to valid Javascript identifier characters.valueString,IntegerorBooleanAny valid value of these types. Any other type may cause undefined behavior, including crashes.
Returns
A Promise, resolved successfully with no value on success, rejected with no value on failure.
Examples
Set the name foo to hold the value bar:
GM.setValue("foo", "bar");
