<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS中常见的函数</title>
<script>
//1.1 加法运算（两个数）
function sum(num1,num2) {
return num1+num2;
}
//如何调用?
sum(12,323);
var result = sum(12,323);
console.log(result);
//1.2 万能的加法函数
function sum2(numbers) {
//变量
var result = 0;
for (var i in numbers){
result += numbers[i];
}
//返回
return result;
}
var result1 = sum2([2121,2121,21,21,21,21,23]);
console.log(result1);
//1.3 匿名函数
var res = function () {
console.log('我是匿名函数');
}
//调用匿名函数
res();
</script>
</head>
<body>
</body>
</html>
网友评论