我想在滚动窗口时更改网址,而不是更改菜单类
我从这里得到了参考
https://codepen.io/anon/pen/LdLgNo
我修改了一下只是添加一些推送状态,但问题是我有一个固定的标题,所以我想在它达到这个高度为75px的情况下改变它,在这种情况下,我为滚动添加额外的75px ,但它仍然无法正常工作,实际上当div滚动并且每个div的顶部符合标题的底部时,如何使其精确,所以url和活动类正在改变
HTML:
<div class="m1 menu">
<div id="menu-center">
<ul>
<li><a class="active" href="#home">Home</a>
</li>
<li><a href="#portfolio">Portfolio</a>
</li>
<li><a href="#about">About</a>
</li>
<li><a href="#contact">Contact</a>
</li>
</ul>
</div>
</div>
<div id="home"></div>
<div id="portfolio"></div>
<div id="about"></div>
<div id="contact"></div>
CSS:
body, html {
margin: 0;
padding: 0;
height: 100%;
width: 100%;
}
.menu {
width: 100%;
height: 75px;
background-color: rgba(0, 0, 0, 1);
position: fixed;
background-color:rgba(4, 180, 49, 0.6);
-webkit-transition: all 0.3s ease;
-moz-transition: all 0.3s ease;
-o-transition: all 0.3s ease;
transition: all 0.3s ease;
}
.light-menu {
width: 100%;
height: 75px;
background-color: rgba(255, 255, 255, 1);
position: fixed;
background-color:rgba(4, 180, 49, 0.6);
-webkit-transition: all 0.3s ease;
-moz-transition: all 0.3s ease;
-o-transition: all 0.3s ease;
transition: all 0.3s ease;
}
#menu-center {
width: 980px;
height: 75px;
margin: 0 auto;
}
#menu-center ul {
margin: 15px 0 0 0;
}
#menu-center ul li {
list-style: none;
margin: 0 30px 0 0;
display: inline;
}
.active {
font-family:'Droid Sans', serif;
font-size: 14px;
color: #fff;
text-decoration: none;
line-height: 50px;
}
a {
font-family:'Droid Sans', serif;
font-size: 14px;
color: black;
text-decoration: none;
line-height: 50px;
}
#home {
background-color: grey;
height: 100%;
width: 100%;
overflow: hidden;
background-image: url(images/home-bg2.png);
}
#portfolio {
background-image: url(images/portfolio-bg.png);
height: 100%;
width: 100%;
}
#about {
background-color: blue;
height: 100%;
width: 100%;
}
#contact {
background-color: red;
height: 100%;
width: 100%;
}
JS:
$(document).ready(function () {
$(document).on("scroll", onScroll);
//smoothscroll
$('a[href^="#"]').on('click', function (e) {
e.preventDefault();
$(document).off("scroll");
$('a').each(function () {
$(this).removeClass('active');
})
$(this).addClass('active');
var target = this.hash,
menu = target;
$target = $(target);
$('html, body').stop().animate({
'scrollTop': $target.offset().top-75
}, 500, 'swing', function () {
window.location.hash = target;
$(document).on("scroll", onScroll);
});
});
function onScroll(event){
var scrollPos = $(document).scrollTop();
$('#menu-center a').each(function () {
var currLink = $(this);
var refElement = $(currLink.attr("href"));
if (refElement.position().top <= scrollPos && refElement.position().top + refElement.height() > scrollPos) {
$('#menu-center ul li a').removeClass("active");
currLink.addClass("active");
}
else{
currLink.removeClass("active");
}
});
}
答案 0 :(得分:0)
你只关注这方面的一面
$('html, body').stop().animate({
'scrollTop': $target.offset().top-75
}, 500, 'swing', function () {
对于在单击导航锚点时将页面滚动到正确位置的此功能,您已考虑75px偏移。
但是你还没有完成它的另一部分 - 滚动处理程序,它检查页面滚动到的位置。最简单的方法是将它计算到你读取的偏移量中,然后你可以保留其余条件不变:
var scrollPos = $(document).scrollTop() + 75;