Test if links are external with jQuery / javascript?

Question

How do I test to see if links are external or internal? Please note:

1. I cannot hard code the local domain.
2. I cannot test for \"http\". I could just as

Answer 1

You can use is-url-external module.

var isExternal = require('is-url-external');
isExternal('http://stackoverflow.com/questions/2910946'); // true | false