console 命令行工具 X clear

console

var arr = ['a','b','c','d','e'];
arr.reverse();
document.write("反向排列后的数组：" + arr);
document.write('<br/>---------------------------------<br/>');

<!DOCTYPE html> 
<html>
<head>
    <meta charset="utf-8" />
    <title></title>
    <script>
      
    </script>
</head>
<body>
</body>
</html>