JavaScript: Get an array of lines from the specified file

JavaScript fundamental (ES6 Syntax): Exercise-159 with Solution

Write a JavaScript program to get an array of lines from the specified file.

• Use fs.readFileSync() to create a Buffer from a file.
• Convert buffer to string using buf.toString(encoding) function.
• Use String.prototype.split(\n) to create an array of lines from the contents of the file.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const fs = require('fs');
const readFileLines = filename =>
  fs
    .readFileSync(filename)
    .toString('UTF8')
    .split('\n');
/*
contents of test.txt :
  line1
  line2
  line3
  ___________________________
*/
let arr = readFileLines('test.txt');

console.log(arr); // ['line1', 'line2', 'line3']

Sample Output:

true
false

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-159-1 by w3resource (@w3resource) on CodePen.

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