Read array values in a loop in JavaScript

Question

I have an array in JavaScript that have defined these values:

var myStringArray = [\"1\",\"2\",\"3\",\"4\",\"5\",\"6\",\"7\",\"8\",\"9\",\"10\"];

Answer 1

How about using a generator:

function* get3() {
  var myStringArray = ["1","2","3","4","5","6","7","8","9","10"];
  var index = 0;
  while (true) {
    yield [0, 1, 2].map(i => myStringArray[(index + i) % myStringArray.length])
    index = (index + 3) % myStringArray.length;
  }
}

Calling this function returns an object which you can call .next() on, to get the next set of 3:

var getter = get3();
console.log(getter.next().value); // ["1","2","3"]
console.log(getter.next().value); // ["4","5","6"]
console.log(getter.next().value); // ["7","8","9"]
// etc.