如何求两个数的平均值？

Question

var thing1 = prompt("what is a number")
var thing2 = prompt("what is a number")

alert(Math.min(thing1,thing2));

I am able to get the minimum of the two members.
How do I change this to give the average of the two numbers asked?

Answer 1

Here's a function that gets an average:

function average(){
  var a = arguments, l = a.length;
  if(l){
    for(var i=0,n=0; i<l; i++){
      n += a[i];
    }
    return n/l;
  }
  return false;
}
// horrible idea to use prompt and alert
var prompt1 = prompt('enter a number');
var prompt2 = prompt('enter another number');
alert(average(prompt1, prompt2));