Javascript: is it possible to console.log hidden chars ('\n, \r')?

Question

I have some strings which have line breaks inside, in console they are shown with breaks:

string1:
test 1
test 2
test 3

I need to split the string and make something like this:

string1:
<p>test 1</p>
<p>test 2</p>
<p>test 3</p>

For most of them the next code works:

string1.split('\n\n').join('</p><p>')

but for some strings this doesn't work, so I could assume they have some other line breaks, for example '\r\n'

Can I somehow see all line breaks as they are? I mean as something like the next:

string1:
test 1\n\n
test 2\n\n
test 3\n\n

@epascarello thanks a lot, JSON.stringify is exactly what I need — Nika Derkach, Mar 20 '18 at 14:05

Solomon Ucko · Answer 1 · 2018-03-20T15:33:40.667

1

Isn't it only a single newline:

test1\ntest2\ntest3

Also, you can use replace instead of split-join:

string1.replace(/\r\n|\n\r|\n|\r/g, '</p><p>')

Make sure to add on the start and end:

'<p>' + string1.replace('\n', '</p><p>') + '</p>'

edited Mar 20 '18 at 15:33

answered Mar 20 '18 at 13:22

Solomon Ucko

the problem is that I don't know what chars I should replace . when I replace \n - it works in most strings I will try escape as mentioned above, hope this helps – Nika Derkach Mar 20 '18 at 13:23
And that replace line is wrong.... that will only replace one instance – epascarello Mar 20 '18 at 13:23
Oops, I forgot. It should be `string1.replace(/\n/g, '
')`.
– Solomon Ucko Mar 20 '18 at 13:32
Still did not answer OP's question. – epascarello Mar 20 '18 at 14:25
Maybe you could check for either newline type (`\n`, `\r`, `\n\r`, or `\r\n`). – Solomon Ucko Mar 20 '18 at 15:33

score 1 · Answer 2 · answered Mar 20 '18 at 13:28

It would be a good case for a regular expression. Sometimes line breaks have only \n sometimes \r\n. Have a look at the answer here: Match line break with regular expression and the documentation on replace() in JavaScript: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace

2 Answers2