基于jQuery倾斜打开侧边栏菜单代码

<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：360、FireFox、Chrome、Safari、Opera、傲游、搜狗、世界之窗. <br>不支持IE8及以下浏览器。</p>
                   <p>
                   <script src="/scripts/2bc/_gg_980_90.js" type="text/javascript"></script></p>
               </section>
               <section></section>
           </div>
       </div>
   </div>

var paperMenu = {
          $window: $(‘#paper-window‘),
          $paperFront: $(‘#paper-front‘),
          $hamburger: $(‘.hamburger‘),
          offset: 1800,
          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.$window.scrollTop();
              equation = (scrollTop + this.offset) / this.pageHeight * 100;
              this.$paperFront.css(‘transform-origin‘, ‘center ‘ + equation + ‘%‘);
          },
          hamburgerFix: function (opening) {
              if (opening) {
                  $(‘.hamburger‘).css({
                      position: ‘absolute‘,
                      top: this.$window.scrollTop() + 30 + ‘px‘
                  });
              } else {
                  setTimeout(function () {
                      $(‘.hamburger‘).css({
                          position: ‘fixed‘,
                          top: ‘30px‘
                      });
                  }, 300);
              }
          },
          bindEvents: function () {
              this.$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();