Answer 1

//You can achieve by selecting input field by it's id and making it's value to null

document.getElementById("inp").value = ""

or you can make <form> Container and place button inside it and giving button a type="reset"

<button type="clear">Clear</button>
https://code.sololearn.com/WIlX1FKlvrpg/?ref=app
Note:I will delete this demo code in 24h , please copy if you need

Answer 2

document.getElementById("inp").value = ""

Answer 3

Taste 👍 but the form method is better i think !

<form action="mailto:[e-mail]" onsubmit="this.submit(); this.reset(); return false;">

Answer 4

There are Always a lot of solutions... That's a reason why programming is sooooo satisfying 😃