试图将数组的元素添加到一起

Question

I am trying to get input into an array using a do while loop until the user enters a blank or 0 then am trying to add all the elements within that array together however it returns them in string form.

I have tried using parseInt() in multiple places however it usually makes the code not work at all.

document.getElementById('while').addEventListener('click', stats);
document.getElementById('while').addEventListener('click', reduction);

var input_array = [];
var value = 0;

function stats() {
  do {
    var number = prompt('Enter a Number');
    var array = input_array.push(number);

    document.getElementById('out2').innerHTML = "[" + input_array + "]";
  } while (value != number);
}

function array_sum(total, num) {
  return total + num;
}

function reduction(item) {
  document.getElementById('out3').innerHTML = input_array.reduce(array_sum);
}

Answer 1

If you simply parseInt before you push the value to the array you would get numbers in the array and all works as expected:

 let input_array = []; let value = 0 function stats() { do { var number = prompt('Enter a Number'); var array = input_array.push(parseInt(number)); // <-- parse here } while (value != number); } stats() // show the prompt etc function array_sum(total, num) { return total + num } console.log(input_array.reduce(array_sum)) 

I only posted the js part without the html just to give you an example that it works as expected.