Question

I need to capture a number passed as appended integers to a CSS class. My regex is pretty weak, what I’m looking to do is pretty simple. I thought that “negative word boundary” \B was the flag I wanted but I guess I was wrong

string = "foo bar-15";
var theInteger = string.replace('/bar\-\B', ''); // expected result = 15

Answer 1

Use a capture group as outlined here:

var str= "foo bar-15";
var regex = /bar-(\d+)/;
var theInteger = str.match(regex) ? str.match(regex)[1] : null;

Then you can just do an if (theInteger) wherever you need to use it