regex vs split to cut the strings in javascript

Question

var str = "in this sentence, I WANT TO GET ONLY THIS PART - not the other parts"

Assume I want to get the part which is starts with , and ends with -

I always use split in order to cut or get the sub-sentence. Because I don't know how to write a regex.

For this example I wrote as;

str.split(",")[1].split("-")[0]
" I WANT TO GET ONLY THIS PART "

Is it efficient to use split? Or how can I write a regex which will take the same part. Which one should I choose? regex or split? What do you suggest and why?

edit: Thank you for giving me the exact regex, but I also want to know which way is better? Using split is also a solution? Or should I learn how to write a regex?

Hi, First of all you need to answer a few qestions : 1) Will your string remain the same? 2) You always have to separate the string that is AllCaps? — A. A. Sebastian
– A. A. Sebastian, Commented Mar 3, 2017 at 6:35
Actually allCaps is just for emphasizing the string that I want to cut. There is no need for it. I just want to get string between "," and "-" for example. — mmu36478
– mmu36478, Commented Mar 3, 2017 at 6:37
You could use .split() with a regex: str.split(/[,-]/)[1]. Or str.split(/(?:, *)|(?: *-)/)[1] to avoid the leading and trailing spaces. (I'm not saying you should, but you could...) — nnnnnn
– nnnnnn, Commented Mar 3, 2017 at 6:42
@nnnnnn thank you! I have never see using split with regex, this is good. — mmu36478
– mmu36478, Commented Mar 3, 2017 at 6:46

m87 · Accepted Answer · 2017-03-03 06:40:03Z

3

You can use the following regex :

,\s?(.*?)\s?-

JavaScript

var str = "in this sentence, I WANT TO GET ONLY THIS PART - not the other parts";
var result = str.match(/,\s?(.*?)\s?-/);
console.log(result[1]);

edited Mar 3, 2017 at 6:40

answered Mar 3, 2017 at 6:36

m87

4,5313 gold badges18 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

xGeo Over a year ago

result will be <space>RESULT<space>

xGeo Over a year ago

+1 for the fix.. yet, this will fail when the result needed contains , or - maybe get first index of , then last index of -? :D

Collectives™ on Stack Overflow

regex vs split to cut the strings in javascript

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related