How to get a number that follows after certain word from url

Question

I have a URL from which I need to read a value. I need to take out the step from the URL. I want to write regex to do that

Let say that if I get the window.location.href, I get the following result

https://mypage/route/step-1/more-route/
https://mypage/route/step-5/more-route/

I want to get the step using regex. What is the best way to achieve that?

Thanks

`s.split("/")[4]` or `.match(/^(?:.*?\/){4}(.+?)\//)` might work, but If you post the actual URL with more specifics about where `step-n` might be and all of your possible edge cases, the prior operation can likely be improved significantly to match your use. What are all the requirements at hand? Thanks. — ggorlen, Jul 01 '19 at 16:30
If the URLs all look like that, just grab one or more digits between a dash and a slash. Pretty straightforward, as regular expressions go. — Chris G, Jul 01 '19 at 16:31
When you say step are you looking for a result of `step-1` or `1`? — Get Off My Lawn, Jul 01 '19 at 16:35
@GetOffMyLawn question heading clearly suggest that you need to get number after certain word — Code Maniac, Jul 01 '19 at 16:38

Get Off My Lawn · Answer 1 · 2019-07-01T16:50:26.907

1

You can use replace to replace everything except for the step number:

.+\/step-(\d+)\/.+

const url1 = 'https://mypage/route/step-1/more-route/'
const url2 = 'https://mypage/route/step-5/more-route/'
const url3 = 'https://mypage/route/step-13/more-route/'

const step = (url) => url.replace(/.+\/step-(\d+)\/.+/, '$1')

console.log(step(url1))
console.log(step(url2))
console.log(step(url3))

edited Jul 01 '19 at 16:50

answered Jul 01 '19 at 16:31

Get Off My Lawn

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Code Maniac · Answer 2 · 2019-07-01T16:42:09.210

0

You can use this regex

\/step-(\d+)

\/ - Matches /
step- - Matches word step-
(\d+) - Matches one or more digits (captured group)

let urls = ['https://mypage/route/step-1/more-route/'
,'https://mypage/route/step-5/more-route/']

let getStep = (url) => {
  let match = url.match(/\/step-(\d+)/i)
  return match && match[1]
}

urls.forEach(url=> console.log(getStep(url)))

edited Jul 01 '19 at 16:42

answered Jul 01 '19 at 16:32

Code Maniac

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score 0 · Answer 3 · answered Jul 01 '19 at 16:33

0

Split it up and then use the index.

let address = window.location.href; let addressArray= address.split('/') console.log(addressArray[3])

answered Jul 01 '19 at 16:33

Smit Thakkar

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How to get a number that follows after certain word from url

3 Answers3