How to check for matches in an array with regular expressions?

Question

JavaScript

Hello.
I have never encountered checking for a match of characters in an array.
For example, there is an array and a string:

var arr = ['@','.ru','.com'],
string = '[email protected]';

How to check in a string for the existence of characters corresponding to elements in an array?
Thank you.

Answer 1

var fragments = ['@','.ru','.com'];
var str = '[email protected]';
if (fragments.some(fragment => str.includes(fragment)) ) {
  // ...
}

If you need a regular expression, then/@|\.ru|\.com/