Confronto date()

<script language='Javascript'>
<!--

var first = new Date('02/21/2020');
var second = new Date('02/21/2020');

if (first < second) {
//alert('prima data inferiore');
}
else if (first > second) {
//alert('prima data superiore');
}
else {
//alert('prima data uguale');
}
</script>