Calculates the sum of 1 to 1000, if the number is a multiple of 5 or three,double it and add it to the sum.

sum.js

$(document).ready(function(){

				var sum1= 0, res = 0, totalSum = 0; 
				
				for (var x = 1; x <= 1000; x++)  
				{  
					if (x % 3 === 0 || x % 5 === 0)  
					{  
						k = x * 2; 
						sum1 += k;  
					}  
					res += x;
				}
			   	totalSum = res + sum1;
				alert(totalSum);
			
					
			});