➫ ➬ ➭ ➮ ➯ ➩ ➪ ➫ ➬ ➭ 矢印大回転の巻

yajiru.js

//var i = 0x27a9, l = 0x27af, c = i;
//(function f(){
//  process.stdout.write("\r" + String.fromCharCode(
//    l<=c?(c=i):++c
//  ));
//
//  setTimeout(f, 100);
//})();

var next = (function(){
  var i = 0x27a9, l = 0x27af, c = i;
  return function(){
    return String.fromCharCode(l<=c?(c=i):++c);
  };
})();

var a = [];
for(var i = 10;i--;){
  a.push(next());
}

(function f(){
  a.shift();
  a.push(next());
  process.stdout.write("\r" + a.join(" "));
  setTimeout(f, 100);
})();