javascript-basic/3-04.RestParameter.html at main · seungwongo/javascript-basic · GitHub

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<!DOCTYPE html>
<html>
<head>
  <title>Document</title>
</head>
<body>
  <script>
    // function sum(x1, x2) {
    //   var y = x1 + x2;
    //   console.log(y);

    //   return y;
    // }

    // sum(5,7);

    // function sum(x1, x2, x3, x4) {
    //   var y = x1 + x2 + x3 + x4;
    //   console.log(y);

    //   return y;
    // }

    // sum(5,7,3,9);

    function sum(...args) {
      var total = 0;
      // for(var x of args) {
      //   total += x;
      // }

      args.forEach(function(x,index){
        console.log(index);
        total += x;
      });
      console.log(total);
      return total;
    }

    sum(3,2,5,7,4,23);
    // sum(3,2);
    // sum(3);


  </script>
</body>
</html>