Increment a number in a string based on the substring before it in JS

Question

I need to increment a number in a url, the number is always preceded by page/ so like page/2/ however the url could be constructed any which way and ma

Answer 1

Matching any numbers between page/ and / should work, regardless of other numbers or where in the URL it occurs

let link = '//localhost:3000/insight/page/2/';
let next = link.replace(/page\/(\d+)\//, (x,y) => 'page/' + (++y) + '/');

console.log(next)

test( '//localhost:3000/insight/page/2/' );
test( '//localhost:3000/insight/page/2/more/here' );
test( '//localhost:3000/page/2/' );
test( '//localhost:3000/insight/page/2/2/2/2/' );

function test(link) {
	var next = link.replace(/page\/(\d+)\//, (x,y) => 'page/' + (++y) + '/');
	console.log(next)
}