JavaScript matching partial domains

let address = 'http://sub.domain2.net/contact/';

if (['https://sub.domain1.com/', 'http://sub.domain2.net/'].includes(address)) {
    console.log('match');
} else {
    console.log('no match');
}

Here, it verifies if the address partially matches any of the 2 in the array. Specifically, I aim for it to match the domain tld.

The address http://sub.domain2.net/contact/ should be a partial match with any item in my array.

Answer №1

Try using Array.prototype.some:

var url = 'http://sub.domain2.net/contact/';

var didMatch = ['https://sub.domain1.com/', 'http://sub.domain2.net/'].some(function(u) {
    return url.indexOf(u) !== -1;
});

if (didMatch) {
    console.log('match');
} else {
    console.log('no match');
}

If you want to only check against the starting of the urls in the array, consider replacing url.indexOf(u) with url.startsWith(u).

For compatibility with <IE9, make use of the polyfill.

Answer №2

Your approach to the issue is not quite right. If all top-level domains were uniform in length, you could easily truncate the URL at that same length for use with the indexOf method. However, since this is not the case, you'll need to implement a loop and utilize the startsWith function instead.

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