Answers for "fs.readdir"

fs.writefile

const fs = require('fs');

fs.writeFile("/tmp/test", "Hey there!", function(err) {
    if(err) {
        return console.log(err);
    }
    console.log("The file was saved!");
}); 

// Or
fs.writeFileSync('/tmp/test-sync', 'Hey there!');

nodejs readfile

const fs = require('fs');

fs.readFile('/Users/joe/test.txt', 'utf8' , (err, data) => {
  if (err) {
    console.error(err);
    return
  }
  console.log(data);
});

nodejs readdir

const fs = require("fs")
fs.readdir("./myfolder", (err, data) => {
	if(err) throw err
  	console.log(data)
})

how to get file name in directory node js

const path = require('path')

//...

//inside the `for` loop
const stat = fs.lstatSync(path.join(dir, file))

fs.readfile

fs.readFile('filename', function read(err, data) {
    if (err) {
        throw err;
    }
    var content = data;
  
    console.log(content);  
   
});

fs readfile encoding

fs.readFile('/etc/passwd', 'utf8', callback);