<1 小玩意(覆盖效果)

时间：2021-08-25 05:49:24
 <!DOCTYPE html>

 <html lang="zh-cn">

 <head>

     <meta charset="utf-8" />

     <style>

     .show1{ animation:show1 0.25s linear;animation-fill-mode: forwards;}

     .show2{ animation:show2 0.25s linear 0.25s;animation-fill-mode: forwards;}

     .show3{ animation:show3 0.25s linear;animation-fill-mode: forwards;}

     .show4{ animation:show4 0.25s linear 0.25s;animation-fill-mode: forwards;}

     @keyframes show1{

         0%{ width:0; height:2px; background-color:red}

         100%{ width:150px; height:2px; background-color:red}

         }

     @keyframes show2{

         0%{ width:2px; height:0; background-color:red}

         100%{ width:2px; height:148px; background-color:red}

         }

     @keyframes show3{

         0%{ width:2px; height:0; background-color:red}

         100%{ width:2px; height:148px; background-color:red}

         }

     @keyframes show4{

         0%{ width:0; height:2px; background-color:red}

         100%{ width:148px; height:2px; background-color:red}

         }

     </style>

 <script src="jquery.js"></script>

 </head>

 <body>

 <div style=" background-color:#CCC; width:150px; height:150px; margin:200px 0 0 200px; position:relative" id="f">

     <div id="child1"></div>

     <div id="child2" style=" position:absolute;left:148px;"></div>

     <div id="child3"></div>

     <div id="child4" style=" position:absolute;top:148px"></div>

 </div>

 </body>

 <script>

 $("#f").mouseover(function(){

     $("#child1").addClass("show1");

     $("#child2").addClass("show2");

     $("#child3").addClass("show3");

     $("#child4").addClass("show4");

     })

 $("#f").mouseout(function(){

     $("#child1").removeClass("show1");

     $("#child2").removeClass("show2");

     $("#child3").removeClass("show3");

     $("#child4").removeClass("show4");

     })

 </script>

 </html>

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