How to split string by empty line in javascript

Question

I have string loaded from file:

var data = load("file.txt");

variable data is:

1
2
3

a
b
c
d
e

How to split this variable into two arrays like this:

[1, 2, 3]

and

[a, b, c, d, e]

I try data.split("\n"); and data.split("\r\n"); but it doesn`t work.

Thank for help.

Not working correctly. Added some special characters after each string. See: (2) ["1↵2↵3", "a↵b↵c↵d↵e"] - tested in chrome console. — user8715953
– user8715953, Commented Oct 3, 2017 at 18:34

ichigolas · Accepted Answer · 2023-09-21 17:26:43Z

11

Try with this:

var str = `1
2
  3

a
b
c  
d
e`

var splitted = str.split(/\n\s*\n/)

splitted.forEach((capture, i) => console.log(`Capture #${i}:\n${capture}`));

This code splits the input in the occurrence of 2 carriage returns, optionally filled with any count of spaces.

answered Oct 3, 2017 at 18:47

ichigolas

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1 Comment

you may want to append .filter(x=>x.length > 0) at the end of the incantation to account for whitespace at the start or the end of the string.

dvr · Accepted Answer · 2021-08-06 07:49:27Z

6

Since the space represents two line breaks you can try something like this:

var data = originalData.split("\n\n");

Then one line break:

data.map((data) => data.split("\n"));

user14550434

answered Oct 3, 2017 at 18:47

dvr

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