js全屏滚动_模块淡入

2018-10-06 分类：Javascript 作者：huanggr 阅读（1542）

相信大家在一些网站上也见过一些特效，例如全屏滚动，模块淡入，接下来就让我来详细的讲解一波吧

全屏滚动

顾名思义，就是将浏览器窗口分为几块，每次触发一个模块，然后一个模块一个模块来进行切换

示例如下

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<!DOCTYPE HTML>
<html>

<head>
<title>爱前端博客</title>
<meta charset="utf-8">
<meta name="Author" content="">
<style type='text/css'>
* {
margin: 0;
padding: 0;
}

body,
html {
height: 100%;
}

body {
overflow: hidden;
}

#wrap {
width: 100%;
height: 100%;
}

#wrap .part {
width: 100%;
height: 100%;
position: relative;
}

#wrap .part .logo {
width: 215px;
height: 60px;
background: url(img/logo.png) top left/100% 100%;
position: absolute;
top: 20px;
left: 20px;
}

#wrap .img1 {
position: absolute;
transition: 1.2s;
}

#wrap .part1 .img1 {
top: 50%;
margin-top: -300px;
left: 50%;
margin-left: -315px;
opacity: 0;
}

#wrap .part2 .img1 {
top: 50%;
margin-top: 0px;
left: 50%;
margin-left: -315px;
opacity: 0;
}

#wrap .part3 .img1 {
top: 50%;
margin-top: -110px;
left: -30px;
opacity: 0;
}

#wrap .part1 .img1.on {
top: 50%;
margin-top: -120px;
left: 50%;
margin-left: -315px;
opacity: 1;
}

#wrap .part2 .img1.on {
top: 50%;
margin-top: -225px;
left: 50%;
margin-left: -315px;
opacity: 1;
}

#wrap .part3 .img1.on {
top: 50%;
margin-top: -110px;
left: 100px;
opacity: 1;
}

#wrap .part img {
display: block;
}

#slide {
width: 20px;
height: 160px;
position: fixed;
top: 50%;
margin-top: -80px;
left: 30px;
}

#slide ul li {
width: 16px;
height: 16px;
border: 2px solid #fff;
margin: 3px 0;
border-radius: 100%;
list-style: none;
cursor: pointer;
}

#slide ul li.on {
background: #fff;
}
</style>
</head>

<body>

<div id='wrap'>
<div class="part part1">
<div class='img1'><img src='img/1-2.png' width='630' height='250'></div>
</div>
<div class="part part2">
<div class='img1'><img src='img/2-2.png' width='630' height='450'></div>
</div>
<div class="part part3">
<div class='img1'><img src='img/3-2.png' width='570' height='220'></div>
</div>
<div class="part part4"></div>
<div class="part part5"></div>
<div class="part part6"></div>
<div class="part part7"></div>
</div>
<div id="slide">
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>

<script type="text/javascript" src="js/jquery-1.11.3.min.js"></script>
<script type="text/javascript" src="js/jquery.mousewheel.js"></script>
<script type="text/javascript">
setTimeout(function () {
$(document).scrollTop(0);
}, 50);

var $part = $('.part');
var $li = $('#slide ul li');
var $img = $('.part img');

//初始化
(function () {
$li.eq(0).addClass('on');
$part.append('<div class="logo"></div>');
$part.each(function (i) {
var str = i != 1 ? 'url(img/' + (i + 1) + '.jpg) no-repeat center / cover' : '#D97F5C';
$(this).css('background', str);
});
})();

//页面滚动
(function () {
var index = 0;
var wH = $(window).height();
var nowTime = new Date();

$(window).resize(function () {
wH = $(window).height();
});
$li.click(function () {
index = $(this).index();
move();
});
$(document).mousewheel(function () {
if (new Date() - nowTime > 500) {
nowTime = new Date();
var d = arguments[1];
index = d < 0 ? (index >= $li.length - 1 ? 0 : index + 1) : (index <= 0 ? $li.length - 1 : index - 1);
move();
};
});

function move() {
$li.eq(index).addClass('on').siblings().removeClass('on');
$('body,html').animate({
scrollTop: index * wH
}, 500, function () {
$part.eq(index).find('.img1').addClass('on');
$part.eq(index).siblings().find('.img1').removeClass('on');
});

}
})();

//图片加载完后盒子居中
</script>
</body>

</html>

模块淡入

顾名思义，就是进入某个模块的时候，触发某一个动画效果

示例如下

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Document</title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
img{
border:0;
}
ol, ul ,li{list-style: none;}
.box {
transition:all 1s;
position: absolute;
left:0;
top:50%;
margin:-100px 0 0 -200px;
width: 200px;
height:200px;
background: red;

}
.on {
margin-left:500px;
}
</style>
</head>
<body>
<div class="box">
模块淡入
</div>

</body>
</html>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
setTimeout(()=>{
$('.box').addClass("on");
},3000)

</script>