<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>计算均值</title></head>
<body>
<h1>计算均值</h1>
<script>
var prices = [ 19,20,70];
var sum = 0;
for(var i =1; i <prices.length; i++)
{
sum = sum +prices[i];
}
var avg = sum/prices.length;
console.log(avg);
//+ "max:"; +Math.max(null,price) +"min:"+Math.min(null,price);
</script>
</body>
</html>
获取一系列数字的均值