codewars题目解答Multiples of 3 or 5

我的解答

    function solution(number){
        var arr =[]
        var arr2 =[]
        for(var i=1;i<number;i++){
            arr.push(i)
        }
        arr.map((val,index)=>{
            if(val%3==0||val%5==0){
                arr2.push(val)
            }
        })
        var anser =arr2.reduce((total,val)=>{
            return total+val
        },0)
        return anser
    }
    console.log(solution(10))

别人简洁的代码

function solution(number){
  var sum = 0;
  
  for(var i = 1;i< number; i++){
    if(i % 3 == 0 || i % 5 == 0){
      sum += i
    }
  }
  return sum;
}