Optional trailing slash in regex

Question

https://embed.thatsite.com?id=
https://embed.thatsite.com/?id=

Im trying to get the trailing slash as optional before ?id=

I tried

https?:\/\/embed\.([^\/]*)\.com\/\?id=([0-9]+) //works with slash only
https:\/\/embed\.([^\/]*)\.com\?id=([0-9]+) //works without slash

So, trailing slash should be optional before ?id= because embed.thatsite.com changes with both url types.Is there any way to make it working.Thankyou

you can make your `\` optional using `?` https://regex101.com/r/lsqEp6/1 — Pavneet_Singh, Feb 12 '17 at 11:22
You're consufing the querystring character `?` with the regex `?` (zero-or-one) - so ya you need both :) — Roko C. Buljan, Feb 12 '17 at 11:24

Pavneet_Singh · Accepted Answer · 2017-02-12T11:29:27.153

3

You can make your / as optional using ?

https?:\/\/embed\.([^\/]*)\.com\/?\?id=([0-9]+)

https?:\/\/embed\. match http\\embed. or https\\embed. where s is optional ?

([^\/]*) match everything except /

\.com\/?\? match .com and optional / and ? character

id=([0-9]+) match id= and capture numeric values as many as possible

Regex Demo

edited Feb 12 '17 at 11:29

answered Feb 12 '17 at 11:23

Pavneet_Singh

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thankyou very much also for the regex101 site I dodnt know about that – Feb 12 '17 at 11:29
@Gazi i am glad that i could help , happy coding – Pavneet_Singh Feb 12 '17 at 11:30

score 2 · Answer 2 · answered Feb 12 '17 at 11:22

2

This should work:

https?:\/\/embed\.([^\/]*)\.com\/?\?id=([0-9]+)

Here, the slash is changed with a ? modifier, which will match the previous character (/) 0 or 1 times.

answered Feb 12 '17 at 11:22

joepd

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Optional trailing slash in regex

2 Answers2