readfile in javascript code example

Example 1: fs.readfile

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

Example 2: javascript fs read

fs.readFile('/etc/passwd', (err, data) => {
  if (err) throw err;
  console.log(data);
});