async function cek_login(event) {
            event.preventDefault();

            const username = document.getElementById("username").value;
            const password = document.getElementById("password").value;
            const task = "login";

            const err_p = document.getElementById("v_notcorrect");
            const err_m = document.getElementById("error-msg");

            const MAIN_PAGE = "<?php echo MAIN_PAGE; ?>";

            if (username == "" || password == "") {
                err_m.textContent = "Username atau password tidak boleh kosong.";
                err_p.classList.remove("hidden");
                return;
            }
            try {
                const response = await fetch("api/LoginAPI/LoginAPI.php", {
                    method: "POST",
                    headers: {
                        "Content-Type": "application/json"
                    },
                    body: JSON.stringify({
                        username,
                        password,
                        task
                    })
                });

                const result = await response.json();


                if (result.status == "success") {
                    window.location.href = MAIN_PAGE;
                } else {
                    err_m.textContent = result.message;
                    err_p.classList.remove("hidden");
                }
            } catch (error) {
                console.error("Oops:", error);
            }
        }