charAt, charCodeAt, fromCharCode
by webproger on 2020-02-09
<!DOCTYPE html><html><head>
</head><body>
<script>
  var c = 3;
  var s = "대한민국";
  for(i=0; i<s.length; i++) {
    document.write(s.charCodeAt(i));
    document.write(' ');
    document.write(s.charAt(i));
    document.write('<br>');
  }
  var o = '';
  for(i=0; i<s.length; i++) {
    var n = s.charCodeAt(i);
    o += String.fromCharCode(n+c);
  }
  for(i=0; i<o.length; i++) {
    document.write(o.charCodeAt(i));
    document.write(' ');
    document.write(o.charAt(i));
    document.write('<br>');
  }
  s = '';
  for(i=0; i<o.length; i++) {
    var n = o.charCodeAt(i);
    s += String.fromCharCode(n-c);
  }
  for(i=0; i<s.length; i++) {
    document.write(s.charCodeAt(i));
    document.write(' ');
    document.write(s.charAt(i));
    document.write('<br>');
  }
</script>
</body></html>

45824 대
54620 한
48124 민
44397 국
45827 댃
54623 핟
48127 믿
44400 군
45824 대
54620 한
48124 민
44397 국