【发布时间】:2014-08-22 09:45:29
【问题描述】:
有人可以帮忙吗?
我似乎有两个问题:
- 页面没有滚动并且
- 当触发器滚动点击 3 次时,.top 未定义。
.hero-banner 是全屏幻灯片。点击.trigger-scroll时,页面需要滚动到sections.scroll-here。到达最后一部分时需要滚动到顶部。
提前感谢您的回答。
HTML:
<section class="hero-banner">full screen section</section>
<div class="trigger-scroll"></div>
<section class="scroll-here" id="first-section">some content</section>
<section class="scroll-here" id="second-section">some content</section>
<section class="scroll-here" id="third-section">some content</section>
JS:
$(document).ready(function() {
$('.page-scroller', function() {
var $scrollSection = $('.scroll-here')
var $scrollTrigger = $('.trigger-scroll')
var nextSection = 0;
$scrollTrigger.on( 'click', function() {
$(this).removeClass('go-to-top');
// If at last section, scroll back to top on next click:
if (nextSection >= $scrollSection.length) {
$('html, body').animate({ scrollTop: 0 }, 1000);
nextSection = 0;
return;
}
// If you've already scrolled down and then click button, run a check
// to find next section position so you don't go backwards:
while ( $('body').scrollTop() > $($scrollSection[nextSection]).offset().top ) {
nextSection++;
}
// If next section is the last, add class to rotate arrow graphic:
if (nextSection === ($scrollSection.length - 1)) {
$(this).addClass('go-to-top');
}
// Move to next section and increment counter check:
$( 'html, body' ).animate({ scrollTop: $($scrollSection[nextSection]).offset().top }, 1000);
nextSection++;
});
});
});
【问题讨论】:
标签: javascript jquery html scroll