JSFiddle - React, Tailwind, and code Playground

by urbycoz

HTML

<label id="myLabel">test</label>
<input type="button" id="myButton" onclick="alert(calculateSum([1,2,3]));" value="Go" />

JavaScript

function calculateSum(arr_numbers){
	var total=0;
  for(i=0;i<arr_numbers.length;i++){
		total += arr_numbers[i];
  }
  return(total);
}