function d() {
    var arrN = [];
    for (var i = 0; i < 7; i++) {
      return arrN[i] = (Math.round(Math.random() * (300 - 100) + 100));
    }
  }
  d();
  console.log(arrN);function d() {
    var arrN = [];
    for (var i = 0; i < 7; i++) {
        arrN[i] = (Math.round(Math.random() * (300 - 100) + 100));
    }
    return arrN;
}
console.log(d());