<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body {
font-family: "Microsoft YaHei", serif;
}
body, dl, dd, p, h1, h2, h3, h4, h5, h6 {
margin: 0;
}
ol, ul, li {
margin: 0;
padding: 0;
list-style: none;
}
img {
border: none
}
</style>
</head>
<body>
<div id="wrap"></div>
<script>
function sum() {
let a = 0;
// 不定参数--每个函数里边都有的变量arguments
// 储存着此次之行所有实参的集合(数组形式)
for (let i=0;i<arguments.length;i++){
a+=arguments[i]
}
console.log(a);
}
sum(1,1);
sum(1,2,3,4);
sum(1,1,3);
</script>
</body>
</html>
Python3Turtle