[jQuery] does jQuery has support for parameter handling ?

[jQuery] does jQuery has support for parameter handling ?

Hello everyone,
i have the following problem: i want to pass a string that is encoded
with the php urlencode() function via json
to some javascript code. does javascript or jQuery support any way to
decode such a string ?
Another point: Does jQuery support any sort of URL parameter handling ?
best regards,
Truppe Steven
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