我在玩 Stellar.js 并使用了这里的演示： http ://webdesign.tutsplus.com/tutorials/complete-websites/create-a-parallax-scrolling-website-using-stellar-js/
我遇到了与演示页面相同的问题，即当页面首次加载时，导航（幻灯片 1）未激活。只有在您开始向下滚动时它才会变为活动状态，然后当您返回幻灯片 1 时，它仍保持活动状态。
这是在 FireFox 和 IE8 中发现的问题（没有要测试的 IE9）。
我确定这是一个航点问题，而不是在页面加载时激活。如何修复它，以便导航中的“幻灯片 1”进入它的活动类状态？
下面是演示中的 JS 代码：
jQuery(document).ready(function ($) {
//initialise Stellar.js
$(window).stellar(
{
// Set scrolling to be in either one or both directions
horizontalScrolling: true,
verticalScrolling: true,
// Refreshes parallax content on window load and resize
responsive: true,
}
);
//Cache some variables
var links = $('.navigation').find('li');
slide = $('.slide');
button = $('.button');
mywindow = $(window);
htmlbody = $('html,body');
//Setup waypoints plugin
slide.waypoint(function (event, direction) {
//cache the variable of the data-slide attribute associated with each slide
dataslide = $(this).attr('data-slide');
//If the user scrolls up change the navigation link that has the same data-slide attribute as the slide to active and
//remove the active class from the previous navigation link
if (direction === 'down') {
$('.navigation li[data-slide="' + dataslide + '"]').addClass('active').prev().removeClass('active');
}
// else If the user scrolls down change the navigation link that has the same data-slide attribute as the slide to active and
//remove the active class from the next navigation link
else {
$('.navigation li[data-slide="' + dataslide + '"]').addClass('active').next().removeClass('active');
}
});
//waypoints doesnt detect the first slide when user scrolls back up to the top so we add this little bit of code, that removes the class
//from navigation link slide 2 and adds it to navigation link slide 1.
mywindow.scroll(function () {
if (mywindow.scrollTop() == 0) {
$('.navigation li[data-slide="1"]').addClass('active');
$('.navigation li[data-slide="2"]').removeClass('active');
}
});
//Create a function that will be passed a slide number and then will scroll to that slide using jquerys animate. The Jquery
//easing plugin is also used, so we passed in the easing method of 'easeInOutQuint' which is available throught the plugin.
function goToByScroll(dataslide) {
htmlbody.animate({
scrollTop: $('.slide[data-slide="' + dataslide + '"]').offset().top
}, 2000, 'easeInOutQuint');
}
//When the user clicks on the navigation links, get the data-slide attribute value of the link and pass that variable to the goToByScroll function
links.click(function (e) {
e.preventDefault();
dataslide = $(this).attr('data-slide');
goToByScroll(dataslide);
});
//When the user clicks on the button, get the get the data-slide attribute value of the button and pass that variable to the goToByScroll function
button.click(function (e) {
e.preventDefault();
dataslide = $(this).attr('data-slide');
goToByScroll(dataslide);
});
});
非常感谢任何帮助。