In nodeJs is there a way to loop through an array without using array size?

Question

Let\'s say I have

myArray = [\'item1\', \'item2\']

I tried

for (var item in myArray) {console.log(item)}

It

Answer 1

    var count=0;
    let myArray = '{"1":"a","2":"b","3":"c","4":"d"}'
    var data = JSON.parse(myArray);
    for (let key in data) {
      let value =  data[key]; // get the value by key
      console.log("key: , value:", key, value);
      count = count + 1;
    }
   console.log("size:",count);