I wrote the initialization method _initialize, but it has not been called in index.php, login.php. When I click on login, it prompts:
jquery-3.2.1.min.js:4 POST http://qiye .com/admin/login/check.html 500 (Internal Server Error)
send @ jquery-3.2.1.min.js:4
ajax @ jquery-3.2.1.min .js:4
(anonymous) @ index.html:63
dispatch @ jquery-3.2.1.min.js:3
q.handle @ jquery- 3.2.1.min.js:3
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
500 error is basically a problem with PHP. Look at the code. I don’t know what’s wrong without looking at the code.