BDQN Web前端 第八章练习代码

&lt;body&gt; <div id="body"> <div id="tmp"></div> <div class="main"> <div class="pointer"></div> <div class="cj-bg"></div> <div class="start"></div> </div> <div class="date"> <p>活动日期 即日起-8月30日</p> </div> </div> &lt;/body&gt; [removed][removed] [removed][removed] [removed][removed] [removed] var num = 0; /*当点击开始的时候，开始赚*/ $(".start").click(function(){ /*动画效果*/ var n1 = Math.floor(Math.random()*8+1); var n2 = Math.floor(Math.random()*4+4); var ch = 45*n1 + 360*n2 + 22.5; num+=ch; $('.cj-bg').css({ "transition":"all 3s ease", "transform":"rotate("+num+"deg)", "-webkit-transform":"rotate("+num+"deg)" }); })