$('button').on('click', function() {
$('input').attr("placeholder", "e-mail");
});div {display: none;}
@media screen and (min-width: 1200px) {
div {display: block;}
}$(window).resize(function() {
var wSize = $(window).width();
if (wSize > 1200) {
$('.menu').slideDown("slow");
}
});