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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta http-equiv="X-UA-Compatible" content="IE=edge">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <script>
- // alert('这是一个弹出框') //弹出消息对话框
- // window.prompt('请输入内容',20) //有输入框 有默认值 带有按钮
- confirm('123') //没有输入框 带有按钮
- </script>
- </body>
- </html>
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