Node.js CURD Operations with File System

The Node.js file system module allows you to work with a file system on your computer. We can include the File System module by using the require() method.

const fs=require('fs');

The fs module provides the API for interacting with a file system in a manner closely modeled around standard POSIX (Portable Operating System Interface) functions.

we can use the fs module for CURD Operations.

• C=> Create,
• U=> Update,
• R=> Read,
• D=> Delete

✅ Create A file Using fs module

const fs=require('fs');

// Create file with file name is newFile.txt
fs.writeFileSync('newFile.text',"New File Created By Usnig Node.js File System")

Output:-

Note:- By Defaults node.js File System access our projects root directory we can easily changed it by using path() module

const path=require('path');

Example:-

// modules
const fs=require('fs');
const path=require('path');

//directory path
const fileDirectory=path.join(__dirname,'Operations')
// Create file with file name is newFile.txt
const filePath=`${fileDirectory}/newFile.text`
fs.writeFileSync(filePath,"New File Created By Usnig Node.js File System")

Output:-

✅ Update File Update Files​​ The File System module has methods fs.appendFile()

// modules
const { error } = require('console');
const fs=require('fs');
const path=require('path');

//directory path
const fileDirectory=path.join(__dirname,'Operations')
// Create file with file name is newFile.txt
const filePath=`${fileDirectory}/newFile.text`
fs.appendFile(filePath, ' and here we are using fs.appendFile() for updating file text',
(error)=>{
if(!error){
    console.log('File Updated Successfuly...')
}
else{
    console.log('Samething is Wrong...')
}
})

console:-

Output:-

✅ Read File The File System module has methods fs.readFile() for read files.

// modules
const { error } = require('console');
const fs=require('fs');
const path=require('path');
//directory path
const fileDirectory=path.join(__dirname,'Operations')
// Create file with file name is newFile.txt
const filePath=`${fileDirectory}/newFile.text`
fs.readFile(filePath,'UTF-8',(err, data)=>{
   if(data){
    console.log(data)
   }
   else(
    console.log(err)
   )
})

Console :-

✅ Delete The File System module has methods fs.unlinkSync() for delete file.

// modules
const { error } = require('console');
const fs=require('fs');
const path=require('path');

//directory path
const fileDirectory=path.join(__dirname,'Operations')
// Create file with file name is newFile.txt
const filePath=`${fileDirectory}/newFile.text`
// Delete file 
    fs.unlinkSync(filePath,
        console.log("File Deleted Successfuly")
    );

Console:-