javascript捕捉键盘 

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 
 4 <head>
 5     <meta charset="UTF-8">
 6     <meta http-equiv="X-UA-Compatible" content="IE=edge">
 7     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 8     <title>Document</title>
 9 </head>
10 
11 <body>
12     <script>
13         window.onload = function () {
14             let usernameElt = document.getElementById("username");
15             usernameElt.onkeydown = function (event) {
16                 alert(event.key);
17             }
18         }
19     </script>
20     <input type="text" name="" id="username">
21 </body>
22 
23 </html>

 

posted @ 2023-02-26 20:52  jason2018  阅读(22)  评论(0)    收藏  举报