Capturing after the nth occurrence of a string using regex

My test string:

/custom-heads/food-drinks/51374-easter-bunny-cake

I am trying to capture the number in the string. The constants in that string are the the number is always preceded by 3 /‘s and followed by a -.

I am a regex noob and am struggling with this. I cobbled together (\/)(.*?)(-) and then figured I could get the last one programmatically, but I would really like to understand regex better and would love if someone could show me the regex to get the last occurrence of numbers between / and -.

>Solution :

Don’t use regexes if possible, i reccomend you to read – https://blog.codinghorror.com/regular-expressions-now-you-have-two-problems/ blog post

To your question, its easier, faster, more bullet proof to get it using splits

const articleName = "/custom-heads/food-drinks/51374-easter-bunny-cake".split("/")[3]
// '51374-easter-bunny-cake'

const articleId = articleName.split("-")[0]

// '51374'

hope it helps