How to decode utf8 in JS ?

Sometimes you need to decode some utf8 strings is JS, so just use this piece of code Wink

Code

GeSHi (javascript):
function utf8_decode(str_data){
  var tmp_arr = [], i = ac = c = c1 = c2 = 0;
 
  while (i < str_data.length){
    c = str_data.charCodeAt(i)
    if (c < 128){
        tmp_arr[ac++] = String.fromCharCode(c); 
        i++;
    } else if ((c > 191) && (c < 224)) {
        c2 = str_data.charCodeAt(i+1);
        tmp_arr[ac++] = String.fromCharCode(((c & 31) << 6) | (c2 & 63));
        i += 2;
    } else {
        c2 = str_data.charCodeAt(i+1);
        c3 = str_data.charCodeAt(i+2);
        tmp_arr[ac++] = String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
        i += 3;
    }
  }
 
  return tmp_arr.join('');
}
Created by GeSHI 1.0.7.20