console 命令行工具 X clear

console

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title></title>
  </head>
  <body>
    <script>
        
        var str = "abcde";
        var str1 = str.split("");
        var str2 = str1.reverse();
        var str3 = str2.join('');
        document.write(str3);

    </script>
  </body>
</html>