GM.deleteValue
From GreaseSpot Wiki
(Redirected from GM deleteValue)
Description
This method deletes an existing name / value pair from storage.
See GM.setValue for details regarding the storage of these values.
Syntax
function GM.deleteValue( name )
Compatibility: Greasemonkey 4.0+
Arguments
name- Property name to delete. See GM.setValue for details on what names are valid.
Returns
A Promise, resolved successfully with no value on success, rejected with no value on failure.
Examples
Delete the stored name / value pair that has the name 'foo':
GM.deleteValue("foo");
Example showing the use of GM.listValues to delete all stored name / value pairs:
let keys = await GM.listValues();
for (let key of keys) {
GM.deleteValue(key);
}
Similar example to the above, but with a filter within the loop to exclude 'a' and 'foo' and 'bar' from deletion:
let keysToKeep = ['a', 'foo', 'bar'];
let keys = await GM.listValues();
for (let key of keys) {
if (!keysToKeep.includes(key)) {
GM.deleteValue(key);
}
}
