How to create files in nodejs

Nodejs method of creating files: first create a front-end sample file; then create files through the fs core module in NodeJS. The module method for creating files is such as "fs.mkdir".

The operating environment of this article: Windows 7 system, nodejs version 14.16, Dell G3 computer.

nodejs creates files and writes file contents

In NodeJS, all file operations are implemented through the fs core module, including the creation and deletion of file directories. , query, and file reading and writing. In the fs module, all methods are divided into two types: synchronous and asynchronous. Methods with the sync suffix are synchronous methods, and methods without the sync suffix are asynchronous methods.

fs module method introduction:

fs.stat  检测是文件还是目录(目录 文件是否存在) 
fs.mkdir  创建目录 （创建之前先判断是否存在） 
fs.writeFile  写入文件(文件不存在就创建,但不能创建目录) 
fs.appendFile 写入追加文件 
fs.readFile 读取文件 
fs.readdir 读取目录 
fs.rename 重命名 
fs.rmdir  删除目录 
fs.unlink 删除文件

nodejs creates a file and writes the content:

//写入文件（会覆盖之前的内容）（文件不存在就创建）  utf8参数可以省略 
fs.writeFile('123.txt','你好nodejs 覆盖','utf8',function(error){
    if(error){
        console.log(error);
        return false;
    }
    console.log('写入成功');
})

Recommended: "nodejs video tutorial"

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