How to prompt for e-mail on click of a button using Java Script

In general a standard link can be created to prompt for an e-mail as shown below and it doesn’t involve Java Script.

<a href="mailto:neo@techpulp.com">Mail to Neo</a>

However same functionality can be attached to a button using onClick event of the button as show below. But this requires Java Script support.

<form>
<input type="button" value="Email Neo"
    onClick="location.href='mailto:neo@techpulp.com'">
</form>