31 lines
676 B
Markdown
31 lines
676 B
Markdown
---
|
|
title: readFileLines
|
|
tags: node,array,string,beginner
|
|
---
|
|
|
|
Returns an array of lines from the specified file.
|
|
|
|
Use `readFileSync` function in `fs` node package to create a `Buffer` from a file.
|
|
convert buffer to string using `toString(encoding)` function.
|
|
creating an array from contents of file by `split`ing file content line by line (each `\n`).
|
|
|
|
```js
|
|
const fs = require('fs');
|
|
const readFileLines = filename =>
|
|
fs
|
|
.readFileSync(filename)
|
|
.toString('UTF8')
|
|
.split('\n');
|
|
```
|
|
|
|
```js
|
|
/*
|
|
contents of test.txt :
|
|
line1
|
|
line2
|
|
line3
|
|
___________________________
|
|
*/
|
|
let arr = readFileLines('test.txt');
|
|
console.log(arr); // ['line1', 'line2', 'line3']
|
|
``` |