JavaScript Tween算法及缓动效果

Flash做动画时会用到Tween类，利用它可以做很多动画效果，例如缓动、弹簧等等。我这里要教大家的是怎么利用flash的Tween类的算法，来做js的Tween算法，并利用它做一些简单的缓动效果。

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运行代码框
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"html xmlns="http://www.w3.org/1999/xhtml"headmeta http-equiv="Content-Type" content="text/html; charset=gb2312" /titleTween/title/headbodydiv style="padding-left:50px;"div style="position:relative; border:1px solid #000000; width:550px; height:50px;"div id="idMove" style="width:50px; height:50px; background:#930; position:absolute;"/div/divdiv style="position:relative;width:550px;height:200px; margin-top:50px;"div id="idChart" style="border:1px solid #000;height:200px;" /divdiv id="idLine" style="position:absolute;top:0;left:0;height:200px;width:1px;background:#000;"/div/div/divdivp Tween类型： br /labelinput name="vTween" type="radio" value="Linear" checked="checked" /Linear /labellabelinput name="vTween" type="radio" value="Quad" /Quadratic /labellabelinput name="vTween" type="radio" value="Cubic" /Cubic /labellabelinput name="vTween" type="radio" value="Quart" /Quartic /labellabelinput name="vTween" type="radio" value="Quint" /Quintic /labellabelinput name="vTween" type="radio" value="Sine" /Sinusoidal /labelbr /labelinput name="vTween" type="radio" value="Expo" /Exponential /labellabelinput name="vTween" type="radio" value="Circ" /Circular /labellabelinput name="vTween" type="radio" value="Elastic" /Elastic /labellabelinput name="vTween" type="radio" value="Back" /Back /labellabelinput name="vTween" type="radio" value="Bounce" /Bounce /label/pp ease类型： br /labelinput name="vEase" type="radio" value="easeIn" checked="checked" /easeIn /labellabelinput name="vEase" type="radio" value="easeOut" /easeOut /labellabelinput name="vEase" type="radio" value="easeInOut" /easeInOut /label/pinput id="idSpeed" type="button" value="减慢速度" /input id="idRun" type="button" value=" Run " //divscript/*算法 </article> </section> <section class="article-more"> <div class="rel mask-box"> <div class="content-mask"></div> <div class="content-more js-content-more">展开更多 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