GSAP小应用——JS单页滚屏
好吧,第一次写,比想像中的花时间呢,总算是写好了。也好久没写博客了,就发上来看看吧!
说明:就是一个很普通的单屏滚动效果,一次滚一屏那样子。
PS:有了这个,再加上TimelineMax,那不就~~ <( ̄︶ ̄)>
PS2:用的是touch事件,只有在手机浏览器或像chrome手机模拟器之类的浏览器中才能看到效果!
<!DOCTYPE html> <html> <head> <title>js单屏滚动</title> <meta charset=‘utf-8‘/> <meta name="viewport" content="width=device-width,target-densitydpi=high-dpi,initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"/> <style type="text/css"> html,body{height: 100%; margin: 0; padding: 0;} .page{height: 100%; font-size: 30em; text-align: center; background-color: rgb(68, 164, 168);} </style> <!-- 引入GSAP --> <script type="text/javascript" src=‘http://cdnjs.cloudflare.com/ajax/libs/gsap/latest/plugins/CSSPlugin.min.js‘></script> <script type="text/javascript" src=‘http://cdnjs.cloudflare.com/ajax/libs/gsap/latest/easing/EasePack.min.js‘></script> <script type="text/javascript" src=‘http://cdnjs.cloudflare.com/ajax/libs/gsap/latest/TweenLite.min.js‘></script> <script type="text/javascript"> //定义初始屏 var currentPage = 1; //定义初始触点纵坐标 var old_clientY = 0; var new_clientY = 0; //定义屏幕高度 var stage = document.body || document.documentElement; var stageHeight = stage.clientHeight; //定义屏幕个数 var pageNum = 4; //禁止屏幕滚动 window.addEventListener(‘touchmove‘,function(ev){ ev.preventDefault(); }); window.addEventListener(‘touchstart‘,function(ev){ old_clientY = ev.changedTouches[0][‘clientY‘]; }); window.addEventListener(‘touchend‘,function(ev){ new_clientY = ev.changedTouches[0][‘clientY‘]; //滚动超过30个像素就不滚动 if(Math.abs(new_clientY - old_clientY) < 30) return; if(new_clientY > old_clientY){//住下拉向上滚 currentPage--; if(currentPage < 1) currentPage = 1; }else{//住上拉向下滚 currentPage++; if(currentPage > pageNum) currentPage = pageNum; } TweenLite.to(‘body‘, 0.8, {scrollTop: (currentPage-1) * stageHeight, ease: Back.easeInOut}); }); </script> </head> <body> <div class=‘page‘>1</div> <div class=‘page‘>2</div> <div class=‘page‘>3</div> <div class=‘page‘>4</div> </body> </html>
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