Regex pattern to get number between forward slashes at the end of a URL

Question

I have a string URL that I just want to grab the number at the very end between "pokemon/" and "/".

"http://pokeapi.co/api/v2/pokemon/1/"

so far I have this -

var regexPat = /\/d+\//
"http://pokeapi.co/api/v2/pokemon/1/".match(regexPat)[0].slice(1,2) // returns 1

Is there a more efficient way to do this?

Answer 1

You may capture the value with a /\/pokemon\/(\d+)\// regex:

var s = "http://pokeapi.co/api/v2/pokemon/1/";
var m = s.match(/\/pokemon\/(\d+)\//);
if (m) {
  console.log(m[1]);
}
// or 
console.log( 
  (res="http://pokeapi.co/api/v2/pokemon/1/".match(/\/pokemon\/(\d+)\//)) ? res[1] : ""
);

Details:

• \/pokemon\/ - a literal text /pokemon/
• (\d+) - Capture group 1 matching 1 or more digits
• \/ - a / symbol.