The method is very simple, I won’t go into detail here, I’ll just give you an example
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>只能输入中文</title>
</head>
<body>
<input type="text" id="text" onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\u4E00-\u9FA5]/g,''))">
</body>
</html>
The above is the entire content of this article, I hope you all like it.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
