<script>
    function getTuning() {
        var vehList = ["1", 2, 7];
        document.addEventListener("DOMContentLoaded", () => {
            const VehOptions = document.getElementById("options");
            const categoryTitles = [
                "1",
				"2", // for example
            ]

            for (var i = 0; i < vehList.length; i++) {
                var signElement = document.createElement('div');
                signElement.className = "vehopt";
                signElement.innerHTML = categoryTitles[vehList[i]];
                VehOptions.appendChild(signElement);
            }
        })
    }

    var init;
</script>

index.js:
mp.keys.bind(CarTuning.keyCode, false, () => {
    if (player.vehicle) {
        if (CarTuning.windowOpen) { // windowOpen = false
            CarTuning.browser.active = false;
            mp.gui.cursor.show(false, false);
            CarTuning.windowOpen = !CarTuning.windowOpen;
        }

        else {
            CarTuning.browser.execute(`${init} = getTuning()`); // NOT WORKS
            mp.events.call("List");
            CarTuning.browser.active = true;
            mp.gui.cursor.show(true, true);
            CarTuning.windowOpen = !CarTuning.windowOpen;
        }
    }

    else {
        mp.gui.chat.push("Нужeн автомобиль!");
    }
});