How in node to split string by newline n

Question

How in node to split string by newline    n     I have simple string like var a    test js nagain js  and I need to get   test js    again js    I tried   a split   n    a split    n    a split   r n    a split   r      but none of above doesn t work

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The first one should work    gt   a nb  split   n       a    b     gt  var a    test js nagain js  undefined  gt  a split   n       test js    again js

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If the file is native to your system  certainly no guarantees of that   then Node can help you out   var os   require  os     a split os EOL     This is usually more useful for constructing output strings from Node though  for platform portability

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It looks like regex   r n  r  n  handles CR  LF  and CRLF line endings  their mixed sequences  and keeps all the empty lines inbetween  Try that   x000D   x000D      function splitLines t    return t split   r n  r  n              single newlines     console log splitLines  AAA rBBB nCCC r nDDD            double newlines     console log splitLines  EEE r rFFF n nGGG r n r nHHH            mixed sequences     console log splitLines  III n r nJJJ r r nKKK r n nLLL r n rMMM     x000D   x000D   x000D   You should get these arrays as a result     quot AAA quot    quot BBB quot    quot CCC quot    quot DDD quot       quot EEE quot    quot  quot    quot FFF quot    quot  quot    quot GGG quot    quot  quot    quot HHH quot       quot III quot    quot  quot    quot JJJ quot    quot  quot    quot KKK quot    quot  quot    quot LLL quot    quot  quot    quot MMM quot     You can also teach that regex to recognize other legit Unicode line terminators by adding   xHH or   uHHHH parts  where H s are hexadecimal digits of the additional terminator character codepoint  as seen in Wikipedia article as U HHHH

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a   a split   n        Note that splitting returns the new array  rather than just assigning it to the original string  You need to explicitly store it in a variable

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I made an eol module for working with line endings in node or browsers  It has a split method like  var lines   eol split text

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Try splitting on a regex like   r  n  to be usable by both Windows and UNIX systems    gt   a nb r nc  split   r  n      a    b    c

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A solution that works with all possible line endings including  mixed ones and keeping empty lines as well can be achieved using two replaces and one split as follows  text replace   r n g    r   replace   n g    r   split   r      some code to test it     var CR     x0D          r   var LF     x0A          n    var mixedfile    00    CR   LF                 1 x win                    01    LF                      1 x linux                    02    CR                      1 x old mac                    03    CR   CR                 2 x old mac                    05    LF   LF                 2 x linux                    07    CR   LF   CR   LF       2 x win                    09      function showarr  desc  arr           console log      -----     desc        for  var ii in arr          console log  ii           arr ii         len       arr ii  length                showarr   using 2 replace   1 split               mixedfile replace   r n g    r   replace   n g    r   split   r       and the output       ----- using 2 replace   1 split   0   00   len   2    1   01   len   2    2   02   len   2    3   03   len   2    4      len   0    5   05   len   2    6      len   0    7   07   len   2    8      len   0    9   09   len   2

[javascript] How in node to split string by newline ('\n')?

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