Try it yourself editor

Code

<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">

<body> 
    State
    <input list="list_of_states" name="state">
    <datalist id="list_of_states">
        <option value="Andhra Pradesh">
        <option value="Assam">
        <option value="Bihar">
        <option value="Chandigarh">
        <option value="Chhattisgarh">
        <option value="Delhi">
        <option value="Goa">
        <option value="Gujarat">
        <option value="Haryana">
        <option value="Himachal Pradesh">
        <option value="Jammu and Kashmir">
        <option value="Jharkhand">
        <option value="Karnataka">
        <option value="Kerala">
        <option value="Madhya Pradesh">
        <option value="Maharashtra">
        <option value="Odisha">
        <option value="Punjab">
        <option value="Rajasthan">
        <option value="Tamil Nadu">
        <option value="Telangana">
        <option value="Tripura">
        <option value="Uttar Pradesh">
        <option value="Uttarakhand">
        <option value="West Bengal">
    </datalist>
</body>

</html>

Output