CODEWITHSUNDEEP
javascriptnode.js
goodvibration
goodvibration

Reputation: 6206

NodeJS function readFileSync - do I pass "utf8" or {encoding: "utf8"}?

I've found various answers to this on Stack Overflow and elsewhere.

Should I do this:

let data = fs.readFileSync(FILE_NAME, "utf8");

Or this:

let data = fs.readFileSync(FILE_NAME, {encoding: "utf8"});

?

Upvotes: 9

Views: 26927

Answers (2)

guru
guru

Reputation: 282

I don't think you need to mention encoding explicitly,since it is an optional parameter

var fs = require("fs");

/***
 * implementation of readFileSync
 */
var data = fs.readFileSync('input.txt');
console.log(data.toString());
console.log("Program Ended");

/***
 * implementation of readFile 
 */
fs.readFile('input.txt', function (err, data) {
    if (err) return console.error(err);
   console.log(data.toString());
});

console.log("Program Ended");

this worked even without providing "encoding" argument

Upvotes: -1

Jonathan Hall
Jonathan Hall

Reputation: 79704

From the documentation, both are valid:

fs.readFileSync(path[, options])

  • options <Object> | <string>
    • encoding <string> | <null> Default: null
    • flag <string> See support of file system flags. Default: 'r'.

The second argument may be either an options object, or an encoding name.

Upvotes: 14

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