What is the best way to utilize an array that has been generated using a function?

Question

What is the best way to utilize an array that has been generated using a function?

After creating a customized function that generates an array of numbers, I encountered an issue where the array is not accessible outside the function itself.

function customArrayGenerator (length, order){ // length = array length; order = integer order of magnitude
    var numbers = new Array();
    var num;
    var mag;
    for (var i = 0; i < length; i++) { // number generator
        num = 0;
        for (var j = 1; j <= order; j++) { // adding numbers at specified magnitude
        mag = Math.pow(10,j);
        num = num + Math.random()*mag;
    }
    numbers[i] = Math.round(num);
}

I'm now wondering how to access and utilize the variable numbers.

javascript arrays function

Answer 1

Answer №1

To retrieve the array outside of the function, utilize the return statement. Create a new variable and set it equal to the array returned by your arroyo function like this: let numbersArr = arroyo(2, 2)

function arroyo(a, b) { // a represents array length; b is the integer magnitude
  var numbers = new Array();
  var num;
  var mag;
  for (var i = 0; i < a; i++) { // generate integers
    num = 0;
    for (var j = 1; j <= b; j++) { // add numbers at specified magnitude
      mag = Math.pow(10, j);
      num = num + Math.random() * mag;
    }
    numbers[i] = Math.round(num);
  }
  
  return numbers;
}

let numbersArr = arroyo(2, 2)
console.log(numbersArr) // output the generated array

for(let i in numbersArr){
  console.log("value [" + i +"] " + numbersArr[i]) // display each element from the array
}

Answer 2

To retrieve the array outside of the function, utilize the return statement. Create a new variable and set it equal to the array returned by your arroyo function like this: let numbersArr = arroyo(2, 2)

function arroyo(a, b) { // a represents array length; b is the integer magnitude
  var numbers = new Array();
  var num;
  var mag;
  for (var i = 0; i < a; i++) { // generate integers
    num = 0;
    for (var j = 1; j <= b; j++) { // add numbers at specified magnitude
      mag = Math.pow(10, j);
      num = num + Math.random() * mag;
    }
    numbers[i] = Math.round(num);
  }
  
  return numbers;
}

let numbersArr = arroyo(2, 2)
console.log(numbersArr) // output the generated array

for(let i in numbersArr){
  console.log("value [" + i +"] " + numbersArr[i]) // display each element from the array
}

What is the best way to utilize an array that has been generated using a function?

Answer №1

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