第一步：一个基础的框架
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
</body>
</html>第二步：编写js代码（先定义一个函数）
<script>
function number() {
}
</script>第三步：定义一数组
<script>
function number() {
}
var arr=['1','2','3','4','5','6','7','8','9','10','11','12','13','14',
'15','16','17','18','19','20','21','22','23','24','25','26'];
</script>第四步：添加一个return 加上向下取整和随机数
<script>
function number(max,min) {
return Math.floor(Math.random()*(max-min+1)+min)
}
var arr=['1','2','3','4','5','6','7','8','9','10','11','12','13','14',
'15','16','17','18','19','20','21','22','23','24','25','26'];
var res= number(arr.length-1,0);
document.write(arr[res]);
</script>第五步:全部代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>//随机点名
function number(max,min) {
return Math.floor(Math.random()*(max-min+1)+min)
}
var arr=['1','2','3','4','5','6','7','8','9','10','11','12','13','14',
'15','16','17','18','19','20','21','22','23','24','25','26'];
var res= number(arr.length-1,0);
document.write(arr[res]);
</script>
</head>
<body>
</body>
</html>版权声明：本文为tea_tea_原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。