滚动设置上滚动隐藏资产净值降下来,不是与barba.js页面过渡
我使用的是流行的scroll detection method向下隐藏滚动一个nav
元素,并显示在滚动起来工作。
$(window).scroll(function(){
currentScrollTop = $(window).scrollTop();
if (currentScrollTop > lastScrollTop) {
// On scroll down
$('nav').removeClass('active');
console.log('Down');
} else {
// On scroll up
$('nav').addClass('active');
console.log('Up');
}
lastScrollTop = currentScrollTop;
logScroll();
});
Barba.js转换我还使用barba.js与页面过渡,所有做工精细
。每次我打开了新的一页我运行一个过渡,我也跑了几个我自己的自定义功能,这对没有任何影响的,从滚动分开:
$(window).scrollTop(0)
我用滚动备份到顶部该文件。它可以跨浏览器工作。
var FadeTransition = Barba.BaseTransition.extend({
start: function() {
// This function is automatically called as soon the Transition starts
// this.newContainerLoading is a Promise for the loading of the new container
// (Barba.js also comes with an handy Promise polyfill!)
// As soon the loading is finished and the old page is faded out, let's fade the new page
Promise
.all([this.newContainerLoading, this.fadeOut()])
.then(this.fadeIn.bind(this));
},
fadeOut: function() {
// this.oldContainer is the HTMLElement of the old Container
return $(this.oldContainer).animate({ opacity: 0 }).promise();
},
fadeIn: function() {
// this.newContainer is the HTMLElement of the new Container
// At this stage newContainer is on the DOM (inside our #barba-container and with visibility: hidden)
// Please note, newContainer is available just after newContainerLoading is resolved!
// Custom — Add scrollTop
$(window).scrollTop(0);
resetScrollTop();
// Custom - History ScrollTop
if ('scrollRestoration' in history) {
history.scrollRestoration = 'manual';
}
var _this = this;
var $el = $(this.newContainer);
$(this.oldContainer).hide();
$el.css({
visibility : 'visible',
opacity : 0
});
$el.animate({ opacity: 1 }, 400, function() {
// Do not forget to call .done() as soon your transition is finished!
// .done() will automatically remove from the DOM the old Container
_this.done();
});
}
});
重置卷轴
我还补充说,我在同一时间运行,试图重置所有滚动的自定义函数。
function resetScrollTop() {
currentScrollTop = $(this).scrollTop();
lastScrollTop = 0;
$('nav').removeClass('active');
}
我甚至通过currentScrollTop设置为零,这是第一个明显的滚动试验覆盖,但似乎没有任何效果(而且也不彻底消除了复位功能):
currentScrollTop = 0
控制台日志
我已经登录这两个值彼此相邻,试图建立这是怎么回事:
function logScroll() {
console.log(currentScrollTop + ' ' + lastScrollTop);
}
当我打开第一页,向下滚动通常currentScrollTop总是至少lastScrollTop + 1:
但每次巴尔巴过渡后,当我向下滚动我发现, currentScrollTop和lastScrollTop等于某些时间,我认为这是造成问题的原因。我只是不知道什么会导致他们在同步增加:
任何帮助/想法将大规模赞赏。