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滚动视差效果封装,便于快速调用实现

Home Page: http://hahnzhu.github.io/parallax.js/

JavaScript 58.47% CSS 29.13% HTML 12.39%

parallax.js's Introduction

parallax.js

目前移动端涌现了很多滚动视差效果的案例,多应用于企业招聘、活动邀请及产品宣传中,形式新颖,让人印象深刻。不过细细观察,就能发现虽然细节都有小创新,但实现原理殊途同归的。基于此,为满足快速实现并提升效率的目的,开发了这个移动端的滚动视差插件。

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我把视差滚动效果归于两类,第一类是基于鼠标滚轮/手指触摸的逐帧动画,第二类是分屏动画(即一屏一屏翻阅)。前者动画细节丰富,互动性强,但是容易让用户感觉疲劳失去耐性,同时效果不易把控;后者分屏翻阅可以快速浏览内容,实现起来也相对简单。考虑到移动端屏幕尺寸以及操作媒介(手指)不同,分屏动画是最理想的,此插件也仅专注于此。

parallax.js 特效组件已加入 FrozenUI 中,详情猛击


一、使用

1、HTML

<!-- 这里的每个标签和每个类都是必须的 -->
<div class="wrapper">
	<div class="pages">
		
		<!-- 第一屏 -->
		<div class="page">
		   	<!-- anything you want.... -->
		</div>
	
		<!-- 第二屏 -->
		<div class="page">
		</div>
	
		<!-- 第三屏 -->
		<div class="page">
		</div>

		...

	</div>
</div>

CSS 引用:

<style rel="stylesheet" href="path/to/parallax.css"></style>

/* 如果需要使用内置动画,需要引用下面的内容 */
<style rel="stylesheet" href="path/to/parallax-animation.css"></style>

JS 引用:

<script src="path/to/zepto.min.js"></script>
<script src="path/to/parallax.js"></script>
<script>
  $('.pages').parallax();
</script>

二、定制

<script>

// 下面的都是默认属性
$('.pages').parallax({
	direction: 'vertical', 	// horizontal (水平翻页)
	swipeAnim: 'default', 	// cover (切换效果)
	drag:      true,		// 是否允许拖拽 (若 false 则只有在 touchend 之后才会翻页)
	loading:   false,		// 有无加载页
	indicator: false,		// 有无指示点
	arrow:     false,		// 有无指示箭头
	/*
	 * 翻页后立即执行
	 * {int} 		index: 第几页
	 * {DOMElement} element: 当前页节点
	 * {String}		directation: forward(前翻)、backward(后翻)、stay(保持原页)
	 */
	onchange: function(index, element, direction) {
		// code here...
	},
	/*
	 * 横竖屏检测
	 * {String}		orientation: landscape / protrait
	 */
	orientationchange: function(orientation) {
		
	}

});

</script>

具体参数演示

// DEMO1(默认)
<script>
$('.pages').parallax({
	loading:   false,
	indicator: false,
	arrow:     false
});
</script>

DEMO1

DEMO1

// DEMO2
<script>
$('.pages').parallax({
	loading:   true,
	indicator: true,
	arrow:     true
});
</script>

DEMO2

DEMO2

// DEMO3
<script>
$('.pages').parallax({
	direction: 'horizontal',
	loading:   true,
	indicator: true,
	arrow:     true
});
</script>

DEMO3

DEMO3

// DEMO4(默认)
<script>
$('.pages').parallax({
	swipeAnim: 'default'
});
</script>

DEMO4

DEMO4

// DEMO5
<script>
$('.pages').parallax({
	swipeAnim: 'cover'
});
</script>

DEMO5

DEMO5

三、DOM 接口

<div class="wrapper">

	<!-- 初始化后自动添加 direction、swipeAnim、direction 类,其中 direction 在翻页的过程中才会添加。 -->
	<div class="pages vertical/horizontal  default/cover  forward/backward">
		
		<!-- 为 page 添加 data-id,当前 page 会自动添加 current 类(翻页后立即添加) -->
		<section data-id="1" class="current">
			...
		</section>

		<section data-id="2">
			...
		</section>
	</div>
</div>
		

四、内置动画

有四种内置动画,分别是 slideToTop/Bottom/Left/RightfadeInToTop/Bottom/Left/RightfollowSlidefadeIn/Out,动画参数可通过 data-animationdata-durationdata-delaydata-timing-function 进行配置。

data-duration 默认值为 500ms,data-delay 默认为0,data-timing-function 默认值为 ease.

可看以下实例:

EXAMPLE

EXAMPLE

<div class="wrapper">
	<div class="pages">

		<!-- 第一屏 -->
		<section class="page">
			<div class="box1" data-animation="slideToBottom" data-timing-function="ease-in"></div>
			<div class="box2" data-animation="slideToTop" data-delay="300" data-timing-function="ease-out"></div>
			<div class="box3" data-animation="slideToRight" data-delay="600" data-timing-function="linear"></div>
			<div class="box4" data-animation="slideToLeft" data-delay="900" data-timing-function="cubic-bezier(.12,.73,.62,1.38)"></div>
		</section>

        <!-- 第二屏 -->
		<section class="page">
			<div class="box1" data-animation="followSlide" data-duration="1000"></div>
			<div class="box2" data-animation="followSlide" data-delay="200" data-duration="1000"></div>
			<div class="box3" data-animation="followSlide" data-delay="400" data-duration="1000"></div>
			<div class="box4" data-animation="followSlide" data-delay="600" data-duration="1000"></div>
		</section>

        <!-- 第三屏 -->
		<section class="page">
			<div class="box1" data-animation="fadeInToBottom"></div>
			<div class="box2" data-animation="fadeInToTop" data-delay="200"></div>
			<div class="box3" data-animation="fadeInToLeft" data-delay="400"></div>
			<div class="box4" data-animation="fadeInToRight" data-delay="600"></div>
		</section>

		<!-- 第四屏 -->
		<section class="page">
			<div class="box1" data-animation="fadeIn"></div>
			<div class="box2" data-animation="fadeOut" data-delay="800"></div>
		</section>

	</div>
</div>

CSS:

/* custom */
section[data-id="1"] {
	background-color: #3498db;
}
section[data-id="2"] {
	background-color: #40d47e;
}
section[data-id="3"] {
	background-color: #ff8c81;
}
section[data-id="4"] {
	background-color: #3498db;
}
.box1 {
	width: 100px;
	height: 200px;
	background-color: #ecf0f1;
	position: absolute;
	left: 160px; top: 126px;
}
.box2 {
	width: 200px;
	height: 100px;
	background-color: #8e44ad;
	position: absolute;
	left: 60px; top: 226px;
}
.box3 {
	width: 100px;
	height: 100px;
	background-color: #34495e;
	position: absolute;
	left: 160px; top: 226px;
}
.box4 {
	width: 50px;
	height: 50px;
	background-color: #e74c3c;
	position: absolute;
	left: 185px; top: 250px;
}

注:followSlide 效果会根据翻页方向的不同而改变,如下:

followSlide1      followSlide2


License

Parallax.js is released under the the MIT license.

parallax.js's People

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