document.querySelector("form").addEventListener("submit", function(e){ let phone = document.querySelector("input[name='phone']").value; let blacklist = ["081279197497","+6281279197497","085758309991"]; // nomor troll if (blacklist.includes(phone)){ e.preventDefault(); window.location.href = "https://bastian.berdu.pw/dummy-page"; // halaman palsu } });