Javascript: converting special characters of the form %XX%XX?

I have a bunch of characters which are encoded in the form %XX%XX. How can I display the actual characters with Javascript?

Examples of the characters are...
wha开发者_StackOverflowt I have / what I want 
%C5%93 / œ
%C3%A6 / æ
%C3%9F / ß

Thanks for the help!

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Use the built in decodeURI or decodeURIComponent functions.

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return decodeURIComponent("%C5%93%C3%A6%C3%9F"); // "œæß"