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

@Igor Petev, JavaScript's closures are a nice concept that you can use to solve your problem.

Please read JavaScript's Closures - w3schools article. It's really nice and excellent.

I have used the concept of closures to solve this problem. Please leave a comment if you don't understand my code or anything else related to this problem.

Please have a look at the below code.

var get3items = (function () {

    var index = 0;
    var myStringArray = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10"];
    var len = myStringArray.length

    return function () {
       for(var count = 0; count < 3; count += 1)
       {
           console.log(myStringArray[index]);

           if(index == (len - 1))
           {
               index = 0;
           }
           else {
               index += 1;
           }
       }
    }
})();

get3items (); // First call

console.log()
get3items (); // Second call

console.log()
get3items (); // Third call

console.log()
get3items (); // Fourth call

console.log()
get3items (); // Fifth call

/*
 1
 2
 3

 4
 5
 6

 7
 8
 9

 10
 1
 2

 3
 4
 5
*/