基于jQuery倾斜打开侧边栏菜单特效代码

基于jQuery多重图片无限循环动画效果。这是一款非常实用的jQuery多图片无限循环动画特效插件。
效果图如下：
 
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html代码：


<div id="paper-back">
<nav>
<div class="close"></div>
<a href="#">Home</a>
<a href="#">About Us</a>
<a href="#">Our Work</a>
<a href="#">Contact</a>
</nav>
</div>
<div id="paper-window">
<div id="paper-front">
<div class="hamburger"><span></span></div>
<div id="container">
<section>
<p>点击左上角的按钮打开菜单</p>
<p>适用浏览器：、FireFox、Chrome、Safari、Opera、傲游、搜狗、世界之窗. <br>不支持IE及以下浏览器。</p>
<p>
<script src="/scripts/bc/_gg__.js" type="text/javascript"></script></p>
</section>
<section></section>
</div>
</div>
</div>



js代码：


var paperMenu = {
$window: $('#paper-window'),
$paperFront: $('#paper-front'),
$hamburger: $('.hamburger'),
offset: ,
pageHeight: $('#paper-front').outerHeight(),
open: function () {
this.$window.addClass('tilt');
this.$hamburger.off('click');
$('#container, .hamburger').on('click', this.close.bind(this));
this.hamburgerFix(true);
// console.log('opening...');
},
close: function () {
this.$window.removeClass('tilt');
$('#container, .hamburger').off('click');
this.$hamburger.on('click', this.open.bind(this));
this.hamburgerFix(false);
// console.log('closing...');
},
updateTransformOrigin: function () {
scrollTop = this.$window.scrollTop();
equation = (scrollTop + this.offset) / this.pageHeight * ;
this.$paperFront.css('transform-origin', 'center ' + equation + '%');
},
hamburgerFix: function (opening) {
if (opening) {
$('.hamburger').css({
position: 'absolute',
top: this.$window.scrollTop() + + 'px'
});
} else {
setTimeout(function () {
$('.hamburger').css({
position: 'fixed',
top: 'px'
});
}, );
}
},
bindEvents: function () {
this.$hamburger.on('click', this.open.bind(this));
$('.close').on('click', this.close.bind(this));
this.$window.on('scroll', this.updateTransformOrigin.bind(this));
},
init: function () {
this.bindEvents();
this.updateTransformOrigin();
}
};
paperMenu.init();





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