The characters displayed by the browser are all a mess of boxes.
希恩2019-09-14 10:00:54
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Is it because the browser does not parse the characters and the string cannot be displayed normally, but if the operation is a number, it is indeed displayed normally
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Set your browser to utf-8, or add header('Content-Type : text/html; charset = UTF-8');