css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose

在制作网站时避免图片太平淡经常会用到动画效果：由小到大跳跃出现。这种效果很有视觉冲击力，显著提高关注度~

原理：利用css3的动画属性@keyframes@-moz-keyframes@-webkit-keyframes定义动画suofang,再用animation调用suofang这一动画帧，并将动画添加到图片上，需要注意的是需要给图片相当于初始化的一个处理

transform:scale(0);    -moz-transform:scale(0);    -webkit-transform:scale(0);

最后在js中调用css动画。对于不同的页面，需要使用index来标注不同的页面。

 1 <!--第二屏开始--> 2     <div class="section"> 3         <div class="mdmobile-second-one"> 4             <div class="mdmobile-second-one-top"> 5                 <img  class="mdmobile-second-one-top-top lazy"  src="/static/imghw/default1.png"  data-src="images/06_03.png" / alt="css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose" > 6                 <img  class="mdmobile-second-one-top-foot lazy"  src="/static/imghw/default1.png"  data-src="images/06_07.png" / alt="css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose" > 7             </div> 8  9             <div class="mdmobile-second-one-middle">10                 <div class="mdmobile-second-one-middle-top">11                     <img  class="mdmobile-second-one-middle-top-left lazy"  src="/static/imghw/default1.png"  data-src="images/07_03.png" / alt="css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose" >12                     <img  class="mdmobile-second-one-middle-top-right lazy"  src="/static/imghw/default1.png"  data-src="images/07_05.png" / alt="css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose" >13                     <div class="clear"></div>14                 </div>15                 <div class="mdmobile-second-one-middle-middle">16                     <img  class="mdmobile-second-one-middle-middle-one lazy"  src="/static/imghw/default1.png"  data-src="images/07_09.png" / alt="css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose" >17                     <img  class="mdmobile-second-one-middle-middle-two lazy"  src="/static/imghw/default1.png"  data-src="images/07_11.png" / alt="css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose" >18                     <img  class="mdmobile-second-one-middle-middle-three lazy"  src="/static/imghw/default1.png"  data-src="images/07_13.png" / alt="css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose" >19                     <div class="clear"></div>20                 </div>21 　　　　　　　　　　<div class="mdmobile-second-one-middle-foot">22                     <img  class="mdmobile-second-one-middle-foot-left lazy"  src="/static/imghw/default1.png"  data-src="images/07_16.png" / alt="css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose" >23                     <img  class="mdmobile-second-one-middle-foot-right lazy"  src="/static/imghw/default1.png"  data-src="images/07_18.png" / alt="css3简易实现图标动画由小到大逐个显现_html/css_WEB-ITnose" >24                     <div class="clear"></div>25                 </div>26             </div>27             <div class="mdmobile-second-one-foot">28             </div>29         </div>30     </div>31     <!--第二屏结束-->

 1 /*第二屏开始*/ 2  3 @keyframes  suofang { 4     0% {transform:scale(0.2);} 5     100% {transform:scale(1.0);} 6 } 7 @-moz-keyframes  suofang { 8     0% {-moz-transform:scale(0.2);} 9     100% {-moz-transform:scale(1.0);}10 }11 @-webkit-keyframes  suofang {12     0% {-webkit-transform:scale(0.2);}13     100% {-webkit-transform:scale(1.0);}14 }15 .mdmobile-second-one-middle-top-right.active,16 .mdmobile-second-one-middle-top-left.active,17 .mdmobile-second-one-middle-middle-one.active,18 .mdmobile-second-one-middle-middle-two.active,19 .mdmobile-second-one-middle-middle-three.active,20 .mdmobile-second-one-middle-foot-left.active,21 .mdmobile-second-one-middle-foot-right.active22 {23     animation: suofang 1s forwards;24     -moz-animation: suofang 1s forwards;25     -webkit-animation: suofang 1s forwards;26 }27 .mdmobile-second-one-middle-top-right,28 .mdmobile-second-one-middle-top-left,29 .mdmobile-second-one-middle-middle-one,30 .mdmobile-second-one-middle-middle-two,31 .mdmobile-second-one-middle-middle-three,32 .mdmobile-second-one-middle-foot-left,33 .mdmobile-second-one-middle-foot-right34 {35     transform:scale(0);36     -moz-transform:scale(0);37     -webkit-transform:scale(0);38 }

if(index == 2){                $(".mdmobile-second-one-middle-top-left").addClass("active");                setTimeout(function(){                    $(".mdmobile-second-one-middle-top-right").addClass("active");                },100);                setTimeout(function(){                    $(".mdmobile-second-one-middle-middle-one").addClass("active");                },200);                setTimeout(function(){                    $(".mdmobile-second-one-middle-middle-two").addClass("active");                },300);                setTimeout(function(){                    $(".mdmobile-second-one-middle-middle-three").addClass("active");                },400);                setTimeout(function(){                    $(".mdmobile-second-one-middle-foot-left").addClass("active");                },500);                setTimeout(function(){                    $(".mdmobile-second-one-middle-foot-right").addClass("active");                },600);            }