JSFiddle - React, Tailwind, and code Playground

by Jerry Pemberton

JavaScript

var sum = 0;
  for (var i = 1; i < 1000  ; i++) {
    if (i % 3 === 0 || i % 5 === 0) {
        sum += i;
    }
  }
  
  alert("The sum of all the multiples of 3 or 5 below 1000 is: " + sum);