| 1234567891011121314151617181920 |
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <script>
- // alert("xxx");//警告框
- // confirm("提示内容");//确认框
- // window.alert("你好")
- // 提示框
- // prompt("提示的内容信息",默认内容);
- var a = prompt("提示的内容信息",20);
- console.log(a)
- </script>
- </body>
- </html>
|
