Button Click Example
Creates an input button and assigns a click event to it.
HTML
<input type="datetime-local" id="date">
<input type="button" id="button" value="Click Me" />
<input type="text" id="output">
<input type="text" id="output_">
JavaScript
$('#button').click(function() {
$("#output").val(new Date($("#date").val()).getTime());
$("#output_").val(new Date($("#date").val()));
});