Itzik984 Itzik984 - 3 months ago 22
Javascript Question

How to count the number of lines of a string in javascript

I want to count the number of lines in a string

i tried to use this stackoverflow answer :

lines = str.split("\r\n|\r|\n");
return lines.length;

on this string(which was originally a buffer):

GET / HTTP/1.1
Host: localhost:8888
Connection: keep-alive
Cache-Control: max-age=0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.2 (KHTML,like Gecko) Chrome/15.0.874.121 Safari/535.2
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

and for some reason i got lines='1'.

any idea how to make it work?


Using a regular expression you can count the number of lines as


Alternately you can try split method as below.

var lines = $("#ptest").val().split("\n");  

working solution: