JavaScript编码和解码错误

Question

I am getting an issue with Javascript Encoding and Decoding. I have a json object which contains a string encoded in UTF-8 like 'R\\xc3\\xa9union' . To ensure that the Javascript file correctly displays the string, I'm adding an attribute charset to the script tag. The json object is in countries.js . I'm including countries.js as <script src="js/countries.js" charset="UTF-8"></script> and yet it is still being displayed as Réunion instead of Réunion . Any suggestion?

Answer 1

Use escape() combined with decodeURIComponent() :

decodeURIComponent(escape('R\xc3\xa9union'));

That should do the trick:

escape('R\xc3\xa9union');           // "R%C3%A9union"
decodeURIComponent("R%C3%A9union"); // "Réunion"

Now, you said you couldn't do this manually for all the places you need strings from the JSON. I really don't know a way to automate this without re-building the JSON with JS, so I'd suggest writing a little "wrapper" function to decode on the fly:

function dc(str){
    return decodeURIComponent(escape(str));
}

You can then decode the required strings with minimal effort:

var myString = dc(myJson["some"]["value"]);

Now, what else could work, but is a little more risky: JSON.stringify() the entire object, decode that using the 2 functions, then JSON.parse() it again.