GAS(Javascript)でhello world

function myHelloworld(){
  let data = {
    '0': [1,0,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,1],
    '1': [1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1],
    '2': [1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1],
    '3': [1,1,1,0,0,0,0,1,1,0,0,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0,1,0,1,1,0,0,1,0,0,0,0,0,1],
    '4': [1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,0,1,1,0,0,0,0,0,1,0,0,0,1,0,0,0,1,0,0,1,1,0,0,0,1,1,0,0,0,0,1,0,0,0,1,1,1],
    '5': [1,0,0,1,0,0,1,1,1,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,0,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,0,0,0,1,0,0,1,0,0,1],
    '6': [1,0,0,1,0,0,1,0,0,0,0,0,1,0,0,1,0,0,1,0,0,1,0,0,0,0,0,1,0,1,0,1,0,1,0,0,1,0,0,1,0,0,1,0,0,0,0,0,1,0,0,1,0,0,1],
    '7': [1,0,0,1,0,0,0,1,1,1,0,0,1,0,0,1,0,0,0,1,1,0,0,2,0,0,0,0,1,0,0,0,1,0,0,0,0,1,1,0,0,0,1,0,0,0,0,0,1,0,0,0,1,1,1],
   };
  const ON_CHAR = "■";
  const OFF_CHAR = "　";
  const NG_CHAR = "※";

  let key = Object.keys(data);
  console.log("");
  for( let i = 0; i < key.length; i++ ) {
    let array = data[key[i]];
    let line = "";
    for( let j = 0; j < array.length; j++ ) {
      if (array[j] == 0) {
        line += OFF_CHAR;
        continue;
      }
      if (array[j] == 1) {
        line += ON_CHAR;
        continue;
      }
      line += NG_CHAR;
    }
    console.log(line);
  }
  console.log("");
}