How we can read a file in Node JS?
Syntax of read a file is given below:-
fs.read(fd, buffer, offset, length, position, callback)
BY Best Interview Question ON 12 Jun 2020
Example
var fs = require("fs");
var buf = new Buffer(1024);
console.log("open existing file");
fs.open('file.txt', 'r+', function(err, fd) {
if (err) {
return console.error(err);
}
console.log("File opened");
console.log("read the file");
fs.read(fd, buf, 0, buf.length, 0, function(err, bytes){
if (err){
console.log(err);
}
console.log(bytes + " bytes read");
if(bytes > 0){
console.log(buf.slice(0, bytes).toString());
}
});
});