JSFiddle - React, Tailwind, and code Playground

JavaScript

var values = [
        "1111.222.333",
        "demo.co.in",
        "demo.tv",
        "demo.org"
    ];
    var results = [];
    for (var i = 0, len = values.length; i < len; i++) {
         var parts = values[i].split("\.");
         parts = parts.slice(1, parts.length);
         results.push(parts.join("."));
    };
    console.dir(results);

    for (var i = 0, len = results.length; i < len; i++) {
        document.body.innerHTML += (i + 1) + ": " + results[i] + "<br />";
    };