实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
x
 
1
<!DOCTYPE html>
2
<html>
3
<head>
4
<script src="https://libs.baidu.com/jquery/1.10.2/jquery.min.js">
5
</script>
6
<script>
7
i=0;
8
$(document).ready(function(){
9
  $("input").keypress(function(){
10
    $("span").text(i+=1);
11
  });
12
});
13
</script>
14
</head>
15
<body>
16
17
Enter your name: <input type="text">
18
<p>Keypresses: <span>0</span></p>
19
20
</body>
21
</html>