Unable to pass an array as function argument in Javascript

April 27, 2022

I am trying to pass an array as a function argument. When I run the HTML the browser displays a blank page. Please help:) (Obviously a coding noob)

<html>

<head>
  <script>
    var list = [7, 8, 9, 4];

    document.write(list);

    pass_array(array) {
      let sum = 0;
      for (let i = 0; i < list.length; i++) {
        sum = +list[i];
      }
      document.write(sum);
    }

    pass_array(this, list);
  </script>
</head>

</html>

>Solution :

You should replace pass_array(array) with function pass_array(array) (as for function declaration), and then use array values inside pass_array function instead

pass_array(this, list); should have only 1 param list like pass_array(list);. In this context, this is not referred to your list data

<html>

<head>
  <script>
    var list = [7, 8, 9, 4];

    document.write(list);

    function pass_array(array) {
      let sum = 0;
      for (let i = 0; i < array.length; i++) {
        sum += array[i];
      }
      document.write(sum);
    }

    pass_array(list);
  </script>
</head>

</html>