Using fs in the file system in javascript

Hariharan
1 min readNov 26, 2020

In this session, I am going to explain about fs module to read the file and write content to a file. And their code to memorize to use them for your future endeavors.

Using fs to read both synchronously and asynchronously :

most for the time we asynchronous code to write in rare cases you will use synchrounous.

code for asynchronous for reading file and writing file:

fs.readFile(filepath,(err,data)=>{

if(err){

throw err;

}else{

console.log(data.toString())

}

})

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fs.writeFile(filepath,str,(err,data)=>{

if(err){

throw err;

}

})

code for synchronous writing and reading file:

fs.writeFileSync(filePath,str,”utf8”);

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let t=fs.readFileSync(filePath,”utf8”);

console.log(t)

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