HTML Input Suggestions

It might come as a surprise, but yes, you can have input suggestions without using any JavaScript.

<input type="text" list="flavours">
<datalist id="flavours">
    <option value="Chocolate"></option>
    <option value="Vanilla"></option>
    <option value="Strawberry"></option>
    <option value="Cherry"></option>
    <option value="Watermelon"></option>
    <option value="Stracciatella"></option>
</datalist>