Reading local text file into a JavaScript array [duplicate]

Question

I have a text file in the same folder as my JavaScript file. Both files are stored on my local machine. The .txt file is one word on each line like:

red  green blue black 

I want to read in each line and store them in a JavaScript array as efficiently as possible. How do you do this?

Answer 1

Using Node.js

sync mode:

var fs = require("fs"); var text = fs.readFileSync("./mytext.txt"); var textByLine = text.split("\n") 

async mode:

var fs = require("fs"); fs.readFile("./mytext.txt", function(text){     var textByLine = text.split("\n") }); 

UPDATE

As of at least Node 6, readFileSync returns a Buffer, so it must first be converted to a string in order for split to work:

var text = fs.readFileSync("./mytext.txt").toString('utf-8'); 

Or

var text = fs.readFileSync("./mytext.txt", "utf-8");