var winHeight = $(window).height();
$(window).resize(function() {
var thisHeight = $(this).height();
if (winHeight - thisHeight > 50) {
弹起时做某事
} else {
收回时做某事
}
});
$(window).resize(function() {
var thisHeight = $(this).height();
if (winHeight - thisHeight > 50) {
弹起时做某事
} else {
收回时做某事
}
});