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首页 / 脚本样式 / JavaScript / 基于javascript实现漂亮的页面过渡动画效果附源码下载

用户通过点击页面左侧的菜单,对应的页面加载时伴随着滑动过滤动画,并带有进度条效果。当然页面的加载是Ajax驱动的,整个加载过渡过程非常流畅,非常好的用户体验。
HTML
HTML结构中,.cd-main包含页面主体内容,.cd-side-navigation包含着侧边导航条,#cd-loading-bar则是用来做进度条动画用的。
<nav class="cd-side-navigation"> <ul> <li> <a href="index.html" class="selected" data-menu="index"> <svg><!-- svg content here --></svg> Intro </a> </li> <li> <!-- ... --> </li> <!-- other list items here --> </ul> </nav> <!-- .cd-dashboard --> <main class="cd-main"> <section class="cd-section index visible"> <header> <div class="cd-title"> <h2>Animated Page Transition #2</h2> <span>Some text here</span> </div> <a href="#index-content" class="cd-scroll">Scroll Down</a> </header> <div class="cd-content" id="index-content"> <!-- content here --> </div> <!-- .cd-content --> </section> <!-- .cd-section --> </main> <!-- .cd-main --> <div id="cd-loading-bar" data-scale="1" class="index"></div> <!-- lateral loading bar --> 
CSS
我们将.cd-side-navigation固定在页面左侧,并且设置它的高度为100%,这样左侧导航菜单就始终占据左侧边栏,右侧主体内容滚动时,左侧导航菜单不动。
.cd-side-navigation {position: fixed;z-index: 3;top: 0;left: 0;height: 100vh;width: 94px;overflow: hidden; } .cd-side-navigation ul {height: 100%;overflow-y: auto; } .cd-side-navigation::before {/* background color of the side navigation */content: "";position: absolute;top: 0;left: 0;height: 100%;width: calc(100% - 4px);background-color: #131519; } .cd-side-navigation li {width: calc(100% - 4px); } .cd-side-navigation a {display: block;position: relative; } .cd-side-navigation a::after {/* 4px line to the right of the item - visible on hover */content: "";position: absolute;top: 0;right: -4px;height: 100%;width: 4px;background-color: #83b0b9;opacity: 0; } .no-touch .cd-side-navigation a:hover::after {opacity: 1; }
JavaScript
当我们点击左侧菜单时,调用triggerAnimation()函数,这个函数会触发加载进度条动画函数loadingBarAnimation(),接着加载页面内容函数:loadNewContent()。
function loadingBarAnimation() { var scaleMax = loadingBar.data("scale"); if( scaleY + 1 < scaleMax) { newScaleValue = scaleY + 1; } // ...loadingBar.velocity({ scaleY: newScaleValue }, 100, loadingBarAnimation); }
当新页面被选中时,一个新的元素.cd-section将会被创建并且插入到DOM中,然后load()新的url内容。
function loadNewContent(newSection) { var section = $("<section class="cd-section overflow-hidden "+newSection+""></section>").appendTo(mainContent);//load the new content from the proper html file section.load(newSection+".html .cd-section > *", function(event){loadingBar.velocity({ scaleY: scaleMax //this is the scaleY value to cover the entire window height (100% loaded) }, 400, function(){section.addClass("visible");var url = newSection+".html";if(url!=window.location){ //add the new page to the window.history window.history.pushState({path: url},"",url); }// ... }); }); }
通过异步加载的页面要返回上一页历史浏览记录的话,可以点击浏览器上的返回即可。返回上一页同样有过渡动画效果。