Check whether a string matches a regex in JS

Question

I want to use JavaScript (can be with jQuery) to do some client-side validation to check whether a string matches the regex:

^([a-z0-9]{5,})$

Answer 1

 let str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
 let regexp = /[a-d]/gi;
 console.log(str.match(regexp));