Node Express Response Cookie Value is Encoded

Question

I'm trying to set a cookie on the response using Express, but it's encoding the value. I'm setting a value with an equals sign, but on the client, it's coming through as %3D.

Any advice?

Thanks!

Answer 1

Argh, I found it!

http://expressjs.com/en/api.html#res.cookie

encode option needs to be set to String.

Answer 2

Express req.cookie method accepts the third param as config, you can set the encoding method for cookie value in it. By default it uses encodeURLComponent, so to prevent this, you can define a custom function to override it:

const myCookieEncode = function (val) {
    return val;
};

...

res.cookie(cookieName, cookieValue, { encode: myCookieEncode })

Answer 3

Actually, it's by default encoding into 'HTML URL encoding' So in URL every special character have a code and '=' has a code '%3D'. So it is simply converting into that code

You can read more from here