decode from unicode hex to string

When I load my data from my model (asp.net model) if the string is in another language (Russian for example), I’m getting the unicode hex code of the chars. How can I convert them to a normal string? The problem isn’t from the javascript encoding, it’s from loading it from the model. I tried using a lot of functions from the forum but none worked! Here is an example of a value I should get:

Петър

And here is what I’m actually getting:

Петър

Answer

const sequence = 'Петър'
const charCode = sequence.split(/[;s]+/g)
  // remove empty
  .filter((v) => v)
  // &#x41F -> 0x41F -> number
  .map((v) => Number.parseInt(v.replace(/&#/, '0')))

console.log(
  String.fromCharCode(...charCode)
)