How to cut string based on 3rd occurrence of a character?

Question

Assuming that I have a string like $foo$bar$baz $5

I have tried to split the string to an array by `$', then remove the first and second elements, and then convert the array to a new string. but I'm wondering if there is a more elegant way to do so?

I have tried to split the string to an array by `$', then remove the first and second elements, and then convert the array to a new string. but I'm wondering if there is a more elegant way to do so. — Karlom, Mar 19 '17 at 09:33
Possible duplicate of [Cutting a string at nth occurrence of a character](http://stackoverflow.com/questions/5494691/cutting-a-string-at-nth-occurrence-of-a-character) — Martin Schneider, Mar 19 '17 at 09:38

Nina Scholz · Accepted Answer · 2017-03-19T10:13:29.707

2

You could remove the first two occurences of $ and some text with an empty string.

^(\$[^$]+){2}\$    regular expression
^                  start of the string
  \$               search for $ literally
    [^$]           search for any character but not $
        +          quantifier one or more
 (       )         group
          {2}      quantifier for exactly two times
 (       ){2}      get the group only two times
             \$    get the third $

var string = '$foo$bar$baz $5',
    result = string.replace(/^(\$[^$]+){2}\$/, '');

console.log(result);

edited Mar 19 '17 at 10:13

answered Mar 19 '17 at 09:34

Nina Scholz

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You beat me to it :D 2 sec difference. – Suresh Atta Mar 19 '17 at 09:37
Nice one! can you add some explanation about how the magic work? – Karlom Mar 19 '17 at 09:39
Sorry I did not notice this: the result should be `baz $5` not `$baz $5`. Can you still do that in a single regexp function? – Karlom Mar 19 '17 at 10:11
how would this be rewritten to return from the start of the string to the nth occurrence instead of returning from the nth occurrence to the end? – benmneb Sep 21 '20 at 10:10
@Benjamin, take `match` and only the first index of the result. – Nina Scholz Sep 21 '20 at 10:56

score 0 · Answer 2 · answered Mar 19 '17 at 09:43

0

Review it:-

var str = '$foo$bar$baz $5',
delimiter = '$',
start = 3,
tokens = str.split(delimiter).slice(start),
result = tokens.join(delimiter);
console.log(result); //baz $5

answered Mar 19 '17 at 09:43

Sachin Kumar

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How to cut string based on 3rd occurrence of a character?

2 Answers2