How to convert unicode characters into corresponding emojis?

Question

["

I'm doing something similar to this website<\/a> with my data.<\/i>

function decodeFBEmoji (fbString) {
  // Convert String to Array of hex codes
  const codeArray = (
    fbString  // starts as '\u00f0\u009f\u0098\u00a2'
    .split('')
    .map(char => (
      char.charCodeAt(0)  // convert '\u00f0' to 0xf0
    )
  );  // result is [0xf0, 0x9f, 0x98, 0xa2]

  // Convert plain JavaScript array to Uint8Array
  const byteArray = Uint8Array.from(codeArray);

  // Decode byte array as a UTF-8 string
  return new TextDecoder('utf-8').decode(byteArray);  // '😢'

Answer 1

["

You're trying to decode some UTF8 but you're mixing up JS string escapes and bytes.<\/i>