​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>所有参数的总和：</h1>
​
<p id="demo"></p>
​
<script>
function sumAll() {
  var i;
  var sum = 0;
  for(i = 0; i < arguments.length; i++) {
    sum += arguments[i];
  }
  return sum;
}
document.getElementById("demo").innerHTML = sumAll(1, 123, 500, 115, 44, 88);
</script>
​
</body>
</html>
​