Javascript analogue of Python's string.encode('UTF-8')

Question

I have a string that represents some binary data, looking like: \x89PNG\x1a\x00\x00\x00IHDR\x00\x00 etc

I need to post this string to some API, etc. AS IS but the problem is that Javascript automatically converts it to PNG etc

.escape, .encodeURI.. etc don't help

In Python such conversion can be done like string.encode('UTF-8') but I can't find nothing like that in JS.

Maybe someone knows the library or something that may help?

user_6302200 · Answer

In Javascript we usualy use Base64 for this.

You can do something like

var encodedData = window.btoa(stringToEncode);
var decodedData = window.atob(encodedData);

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function encode_utf8(s) {
  return unescape(encodeURIComponent(s));
}

function decode_utf8(s) {
  return decodeURIComponent(escape(s));
}