JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    
</div>

JavaScript

var arr = ['33.5252', '52.6375', 'no.way!', '342.6624', '64.1532', 34.4621];
var re = /(^\d{2}\.\d{4}$)/;


for (var i = 0; i < arr.length; i++) {
    $('div').append('<pre>' + arr[i] + ": " + re.test(arr[i]) + ' </pre>');
}