Loop through range argument

Question

I'm trying out Google Apps Script editor and a simple for loop gives me weird results.

Say I have a spreadsheet

In script editor I write a function:

function calculate(array) {
 var result = 0;

 for (var i = 0; i < array.length; i++) {
  result += array[i]; 
 }

  return result;
}

• I would expect a returned value to be 9 but instead I get 045
• Returning array.length I get 2 as expected
• Returning array[0] I get 4 as expected

I tried googling it but i found some weird workarounds using array.map function.
Am I doing something wrong, is it not supposed to be plain javascript?

Answer 1

Got it. I had to convert values to number: result += Number(array[i]);