JSFiddle - React, Tailwind, and code Playground

JavaScript

var name = ["Илья", "Greg", "Алина"];

for (var i = 0; i < name.length; i++) {
	var item = name[i];
    for (var z = 0; z < item.length; z++) {
        if (item.charCodeAt(z) < 1040 || item.charCodeAt(z) > 1103) {
            console.log(item.charAt(z) + "<br>");
        }    
    }
}