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一种通用的jquery动画滚屏方案
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一种通用的jquery动画滚屏方案
原创在网站页面上，点击某个超链接，页面跳转到某个位置，跳转过程有一个动画滚动效果，这是一种比较酷的体验。这种效果是如何实现的呢，本文通过实际代码来详解实现方法。
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>滚屏效果</title>
<script src="./assets/js/jquery.min.js"></script>
</head>
<body style=" margin-left: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; ">
<div id="header" style="height: 100px;">
<a id="tech" class="scroll-a" href="#hi-tech">技术</a>
<a id="code" class="scroll-a" href="#hi-code">代码</a>
</div>
<div style="background-color: gray;height: 600px;">
<h1>间隔</h1>
</div>
<div style="background-color: white;height: 600px;" id="hi-tech">
<h1>技术</h1>
<a id="tohead1" class="scroll-a" href="#header">返回顶部</a>
</div>
<div style="background-color: gray;height: 600px;" id="hi-code">
<h1>代码</h1>
<a id="tohead" class="scroll-a" href="#header">返回顶部</a>
</div>
</body>
<script>
$('#tech').on("click", function () {
$('html,body').animate({scrollTop:$('#hi-tech').offset().top}, 800);
return false;
});
$('#code').on("click", function () {
$('html,body').animate({scrollTop:$('#hi-code').offset().top}, 800);
return false;
});
$('#tohead').on("click", function () {
$('html,body').animate({scrollTop:$('#header').offset().top}, 800);
return false;
});
$('#tohead1').on("click", function () {
$('html,body').animate({scrollTop:$('#header').offset().top}, 800);
return false;
});
</script>
</html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>滚屏效果</title>
<script src="./assets/js/jquery.min.js"></script>
</head>
<body style=" margin-left: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; ">
<div id="header" style="height: 100px;">
<a id="tech" class="scroll-a" href="#hi-tech">技术</a>
<a id="code" class="scroll-a" href="#hi-code">代码</a>
</div>
<div style="background-color: gray;height: 600px;">
<h1>间隔</h1>
</div>
<div style="background-color: white;height: 600px;" id="hi-tech">
<h1>技术</h1>
<a id="tohead1" class="scroll-a" href="#header">返回顶部</a>
</div>
<div style="background-color: gray;height: 600px;" id="hi-code">
<h1>代码</h1>
<a id="tohead" class="scroll-a" href="#header">返回顶部</a>
</div>
</body>
<script>
$('#tech').on("click", function () {
$('html,body').animate({scrollTop:$('#hi-tech').offset().top}, 800);
return false;
});
$('#code').on("click", function () {
$('html,body').animate({scrollTop:$('#hi-code').offset().top}, 800);
return false;
});
$('#tohead').on("click", function () {
$('html,body').animate({scrollTop:$('#header').offset().top}, 800);
return false;
});
$('#tohead1').on("click", function () {
$('html,body').animate({scrollTop:$('#header').offset().top}, 800);
return false;
});
</script>
</html>
这里主要用到了jquery的animate方法，实现思路是，当点击某个超链接时，通过jquery的animate将屏幕滚动到某个位置。注意animate函数的两个参数，一个是滚动位置，一个是动画滚动的时间毫秒。
$('#tech').on("click", function () {
$('html,body').animate({scrollTop:$('#hi-tech').offset().top}, 800);
return false;
});
$('html,body').animate({scrollTop:$('#hi-tech').offset().top}, 800);
return false;
});
虽然实现了效果，这里有个问题，如果滚动的超链接较多，那么就要写不少重复代码，还要注意滚动位置不要写错。下面通过改变一下jquery选择器来优化代码。
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>滚屏效果</title>
<script src="./assets/js/jquery.min.js"></script>
</head>
<body style=" margin-left: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; ">
<div id="header" style="height: 100px;">
<a id="tech" class="scroll-a" href="#hi-tech">技术</a>
<a id="code" class="scroll-a" href="#hi-code">代码</a>
</div>
<div style="background-color: gray;height: 600px;">
<h1>间隔</h1>
</div>
<div style="background-color: white;height: 600px;" id="hi-tech">
<h1>技术</h1>
<a id="tohead1" class="scroll-a" href="#header">返回顶部</a>
</div>
<div style="background-color: gray;height: 600px;" id="hi-code">
<h1>代码</h1>
<a id="tohead" class="scroll-a" href="#header">返回顶部</a>
</div>
</body>
<script>
$('.scroll-a').on("click", function () {
let scrollto = $(this).attr('href');
$('html,body').animate({scrollTop:$(scrollto).offset().top}, 800);
return false;
});
</script>
</html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>滚屏效果</title>
<script src="./assets/js/jquery.min.js"></script>
</head>
<body style=" margin-left: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; ">
<div id="header" style="height: 100px;">
<a id="tech" class="scroll-a" href="#hi-tech">技术</a>
<a id="code" class="scroll-a" href="#hi-code">代码</a>
</div>
<div style="background-color: gray;height: 600px;">
<h1>间隔</h1>
</div>
<div style="background-color: white;height: 600px;" id="hi-tech">
<h1>技术</h1>
<a id="tohead1" class="scroll-a" href="#header">返回顶部</a>
</div>
<div style="background-color: gray;height: 600px;" id="hi-code">
<h1>代码</h1>
<a id="tohead" class="scroll-a" href="#header">返回顶部</a>
</div>
</body>
<script>
$('.scroll-a').on("click", function () {
let scrollto = $(this).attr('href');
$('html,body').animate({scrollTop:$(scrollto).offset().top}, 800);
return false;
});
</script>
</html>
可以看出，通过使用jquery class选择器，并使用jquery的this对象获取滚动目标，明显减少了代码，代码看起来更加清楚。
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