console 命令行工具 X clear
console
<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=, initial-scale=">
	<meta http-equiv="X-UA-Compatible" content="">
	<title></title>
</head>
<body>
	<form action="#" method="post">
       输入网址: <input type="url" list="url_n" name="web" />
       <datalist id="url_n">
           <option label="百度首页">http://www.baidu.com</option>
           <option value="新浪首页">https://www.sina.com.cn</option>
       </datalist>
    </form>
</body>
</html>