CODE EXAMPLE FOR JAVASCRIPT

alpine js

<div x-data="{ open: false }">
    <button @click="open = true">Open Dropdown</button>

    <ul
        x-show="open"
        @click.away="open = false"
    >
        Dropdown Body
    </ul>
</div>
<script src="https://cdn.jsdelivr.net/gh/alpinejs/alpine@v2.x.x/dist/alpine.min.js" defer></script>