Unicode and URI encoding, decoding and escaping in JavaScript

Posted by apphacker on Stack Overflow See other posts from Stack Overflow or by apphacker
Published on 2010-04-07T22:59:53Z Indexed on 2010/04/07 23:03 UTC
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If you look at this table here, it has a list of escape sequences for Unicode characters that don't actually work for me.

For example for "%96", which should be a –, I get an error when trying decode:

decodeURIComponent("%96");
URIError: URI malformed

If I attempt to encode "–" I actually get:

encodeURIComponent("–");
"%E2%80%93"

I searched through the internet and I saw this page, which mentions using escape and unescape with decodeURIComponent and encodeURIComponent respectively. This doesn't seem to help because %96 doesn't show up as "–" no matter what I try and this of course wouldn't work:

decodeURIComponent(escape("%96));
"%96"

Not very helpful.

How can I get "%96" to be a "–" with JavaScript (without hardcoding a map for every single possible unicode character I may run into)?

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