css3简易实现图标动画由小到大逐个显现

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 src="images/06_03.png"   class="mdmobile-second-one-top-top"/>

 6                 <img src="images/06_07.png"   class="mdmobile-second-one-top-foot"/>

 7             </div>

 8 

 9             <div class="mdmobile-second-one-middle">

10                 <div class="mdmobile-second-one-middle-top">

11                     <img src="images/07_03.png"  class="mdmobile-second-one-middle-top-left"/>

12                     <img src="images/07_05.png"   class="mdmobile-second-one-middle-top-right"/>

13                     <div class="clear"></div>

14                 </div>

15                 <div class="mdmobile-second-one-middle-middle">

16                     <img src="images/07_09.png"  class="mdmobile-second-one-middle-middle-one"/>

17                     <img src="images/07_11.png"   class="mdmobile-second-one-middle-middle-two"/>

18                     <img src="images/07_13.png"  class="mdmobile-second-one-middle-middle-three"/>

19                     <div class="clear"></div>

20                 </div>

21 　　　　　　　　　　<div class="mdmobile-second-one-middle-foot">

22                     <img src="images/07_16.png"  class="mdmobile-second-one-middle-foot-left"/>

23                     <img src="images/07_18.png"  class="mdmobile-second-one-middle-foot-right"/>

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.active

22 {

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-right

34 {

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);

            }