JavaScript菜单在向下滚动时隐藏,在停止时显示
我有一个菜单,它是一个普通的块显示div,因为上面还有一个带注释的div。我希望菜单在向下滚动时固定在顶部,但立即将其隐藏。这是因为当用户停止滚动时,它会出现,当用户向上滚动时,它会再次隐藏,当停止-出现时,当向下滚动-隐藏等。。。并且在没有滚动时始终显示 有人能帮我吗 以下是我的菜单代码:JavaScript菜单在向下滚动时隐藏,在停止时显示,javascript,jquery,html,css,Javascript,Jquery,Html,Css,我有一个菜单,它是一个普通的块显示div,因为上面还有一个带注释的div。我希望菜单在向下滚动时固定在顶部,但立即将其隐藏。这是因为当用户停止滚动时,它会出现,当用户向上滚动时,它会再次隐藏,当停止-出现时,当向下滚动-隐藏等。。。并且在没有滚动时始终显示 有人能帮我吗 以下是我的菜单代码: <div class="menu"> <div class="menu_tab"> <div class="wrapper">
<div class="menu">
<div class="menu_tab">
<div class="wrapper">
<div class="obsah">
<div class="kolonky" id="strana">
<a href="./"><div class="logo"></div></a>
</div>
<div class="kolonky" id="stred">
<div class="rozbalit"><a href="obchod.php" id="srdce">Obchod</a>
<nav>
<a href="priprava_navod.php">Jak připravit matcha čaj</a>
<a href="jakaje.php">Jak vychutnat matcha čaj</a>
<a href="recepty.php">recepty</a>
</nav>
</div>
<div class="rozbalit"><a href="poznejte.php">poznejte matcha</a>
<nav>
<a href="priprava_navod.php">Jak připravit matcha čaj</a>
<a href="jakaje.php">Jak vychutnat matcha čaj</a>
<a href="recepty.php">recepty</a>
</nav>
</div>
<div class="rozbalit"><a href="priprava_navod.php">příprava</a>
<nav>
<a href="priprava_navod.php">Jak připravit matcha čaj</a>
<a href="jakaje.php">Jak vychutnat matcha čaj</a>
<a href="recepty.php">recepty</a>
</nav>
</div>
<a href="clanek.php">blog</a>
<a href="pribeh.php">o nás</a>
</div>
<div class="kolonky" id="strana">
<div id="uzivatel">
<a href="ucet.php" id="prihlaseni_otevri">Jaroslava B</a>
<nav class="uziv_info">
<a href="ucet.php">Moje objednávky</a>
<a href="ucet.php">Moje adresy</a>
<a href="ucet.php">nákupní košík</a>
<a href="#">odhlásit</a>
<a href="#">nastavení</a>
</nav>
</div>
<a href="#"><div class="kosik">
<span>15</span>
</div></a>
<span id="jazyky">CZ</span>
</div>
</div>
</div>
</div>
</div>
.hidden_scr{
display: none !important;
}
.menu{
width: 100%;
background: transparent;
transition-duration: 0.3s;
-webkit-transition: all 0.5s ease;
-moz-transition: all 0.5s ease;
-o-transition: all 0.5s ease;
transition: all 0.5s ease;
}
.menu.cloned{
background: rgba(255,255,255,0.8);
z-index: 5;
}
.menu_tab{
width: 60%;
margin: 0px auto;
padding: 20px 0px;
display: table;
text-align: center;
vertical-align: middle;
table-layout: fixed;
background: transparent;
}
.menu_wr{
display: inline-block;
margin-bottom: -5px;
}
.menu_wr.grey{
background: #edecf0;
}
.menu.grey.cloned{
background: rgba(255,255,255,0.8);
}
.menu .obsah{
display: table-row;
}
$('.menu').addClass('original').clone().insertAfter('.menu').addClass('cloned').css('position','fixed').css('top','0').css('margin-top','0').css('z-index','3').removeClass('original').hide();
scrollIntervalID = setInterval(stickIt, 10);
function stickIt() {
var orgElementPos = $('.original').offset();
orgElementTop = orgElementPos.top;
if ($(window).scrollTop() >= (orgElementTop)) {
orgElement = $('.original');
coordsOrgElement = orgElement.offset();
leftOrgElement = coordsOrgElement.left;
widthOrgElement = orgElement.css('width');
$('.cloned').css('left',leftOrgElement+'px').css('top',0).css('width',widthOrgElement).show();
$('.original').css('visibility','hidden');
} else {
$('.cloned').hide();
$('.original').css('visibility','visible');
}
}
var lastScrollTop = 0;
// element should be replaced with the actual target element on which you have applied scroll, use window in case of no target element.
window.addEventListener("scroll", function(){ // or window.addEventListener("scroll"....
var st = window.pageYOffset || document.documentElement.scrollTop; // Credits: "https://github.com/qeremy/so/blob/master/so.dom.js#L426"
if (st > lastScrollTop){
$('.menu.cloned').addClass("hidden_scr");
} else {
$('.menu.cloned').removeClass("hidden_scr");
}
lastScrollTop = st;
}, false);
CZ
.隐藏的{
显示:无!重要;
}
.菜单{
宽度:100%;
背景:透明;
过渡时间:0.3s;
-webkit过渡:所有0.5s轻松;
-moz过渡:所有0.5s轻松;
-o型过渡:所有0.5s的轻松度;
过渡:所有0.5s缓解;
}
.菜单.克隆{
背景:rgba(255255,0.8);
z指数:5;
}
.菜单选项卡{
宽度:60%;
保证金:0px自动;
填充:20px 0px;
显示:表格;
文本对齐:居中;
垂直对齐:中间对齐;
表布局:固定;
背景:透明;
}
.菜单{
显示:内联块;
边缘底部:-5px;
}
.menu_wr.GRY{
背景#edecf0;
}
.菜单.灰色.克隆{
背景:rgba(255255,0.8);
}
.菜单{
显示:表格行;
}
$('.menu').addClass('original').clone().insertAfter('.menu').addClass('cloned').css('position','fixed').css('top','0').css('margin-top','0').css('z-index','3').removeClass('original').hide();
scrollIntervalID=setInterval(stickIt,10);
功能套件(){
var orgementpos=$('.original').offset();
orgElementTop=orgElementPos.top;
如果($(窗口).scrollTop()>=(orgElementTop)){
orgElement=$('.original');
coordsOrgElement=orgElement.offset();
leftOrgElement=coordsOrgElement.left;
widthOrgElement=orgElement.css('width');
$('.cloned').css('left',leftOrgElement+'px').css('top',0).css('width',widthOrgElement).show();
$('.original').css('visibility','hidden');
}否则{
$('.cloned').hide();
$('.original').css('visibility','visible');
}
}
var lastScrollTop=0;
//元素应替换为已应用滚动的实际目标元素,如果没有目标元素,请使用窗口。
window.addEventListener(“滚动”,function(){//或window.addEventListener(“滚动”)。。。。
var st=window.pageYOffset | | document.documentElement.scrollTop;//信用:https://github.com/qeremy/so/blob/master/so.dom.js#L426"
如果(st>lastScrollTop){
$('.menu.cloned').addClass(“hidden_scr”);
}否则{
$('.menu.cloned').removeClass(“hidden_scr”);
}
lastScrollTop=st;
},假);
完成:)
var;
var lastScrollTop=0;
varδ=5;
var navbarHeight=$('.menu').outerHeight();
$(窗口)。滚动(功能(事件){
didcoll=true;
});
setInterval(函数(){
如果(滚动){
哈斯克罗尔();
didcoll=false;
}否则{
$('.menu').removeClass('nav-up').addClass('nav-down');
}
}, 250);
函数hasScrolled(){
var st=$(this.scrollTop();
if(Math.abs(lastScrollTop-st)lastScrollTop&&st>navbarHeight){
$('.menu').removeClass('nav-down').addClass('nav-up');
}否则{
如果(st+$(窗口).height()<$(文档).height()){
$('.menu').removeClass('nav-down').addClass('nav-up');
}
}
lastScrollTop=st;
if(document.body.scrollTop==0){
$(“.nav up”).css(“背景”、“透明”);
$(“.nav down”).css(“背景”、“透明”);
}否则{
$(“.nav up”).css(“背景”、“rgba(255255,0.9)”);
美元(“.nav down”).css(“背景”、“rgba(255255,0.9)”);
}
}
请不要更改已解决后缀的标题。
var didScroll;
var lastScrollTop = 0;
var delta = 5;
var navbarHeight = $('.menu').outerHeight();
$(window).scroll(function(event){
didScroll = true;
});
setInterval(function() {
if (didScroll) {
hasScrolled();
didScroll = false;
}else{
$('.menu').removeClass('nav-up').addClass('nav-down');
}
}, 250);
function hasScrolled() {
var st = $(this).scrollTop();
if(Math.abs(lastScrollTop - st) <= delta)
return;
if (st > lastScrollTop && st > navbarHeight){
$('.menu').removeClass('nav-down').addClass('nav-up');
} else {
if(st + $(window).height() < $(document).height()) {
$('.menu').removeClass('nav-down').addClass('nav-up');
}
}
lastScrollTop = st;
if(document.body.scrollTop === 0){
$(".nav-up").css("background", "transparent");
$(".nav-down").css("background", "transparent");
}else{
$(".nav-up").css("background", "rgba(255,255,255,0.9)");
$(".nav-down").css("background", "rgba(255,255,255,0.9)");
}
}