title: The best way to sum up lots of numbers using JavaScript?
body: <p>I have a large numbers of variables. What is the most correct way to calculate the sum. Below is the static way. .What if the numbers will increase to N times?</p>
  
  <pre><code>function abc(a,b,c,d){
    alert(a+b+c+d); 
  }
  abc(2,3,4,5);
  </code></pre>