导航栏
.navigation {
position: fixed;
bottom: 100px;
right: 100px;
z-index:;
}
.navigation {
transition: bottom 2s;
-webkit-transition: bottom 2s;
}
JQ代码
var nav = eval($('.navigation').offset().top - $(window).scrollTop());
$(window).on('scroll', function() {
var navh = $('.navigation').height();
var foot = parseInt($('.footer').offset().top - $(this).scrollTop() - navh);
/*console.log(nav - foot);*/
if(nav == foot || nav > foot) {
$('.navigation').css({
'position': 'fixed',
'bottom': '400px'
});
} else {
$('.navigation').css({
'position': 'fixed',
'bottom': '100px'
});
}
});