node.js - nodeJS 写入文件的内容怎么不是按次序的？

Question

Answer 1

Because it’s asynchronous

Answer 2

fs.appendFile Asynchronous, please use fs.appendFileSync

for synchronization

https://nodejs.org/api/fs.htm...

Answer 3

It is recommended that you concatenate the strings before writing them to the file. . .

Answer 4

Most nodejs file operation APIs are divided into asynchronous/synchronous (fs.xxx/fs.xxxSync). Just change it to synchronized function content.