jquery控制css3動畫 清單,jquery操作css3動畫

我想在點選card_options_btn判斷動畫走到0點進行js操作要怎麼改

比如為0點彈出個alert

html{background-color: #fff;font-family: Arial, sans-serif;font-size: 12px;color: #000;}

body{text-rendering: optimizeLegibility;-webkit-font-smoothing: antialiased;-webkit-text-size-adjust: 100%;width: 100%;margin: 0;padding: 0}

a {color: #000;text-decoration: none;}

#page{width: 1125px;margin: 0px auto;display: block;margin-top: 10px;height: 274px;}

#single_column{background-color: #fff;padding: 30px;padding-bottom: 50px;}

#card_options_container h1{font-family:"Avalon-Medium", Roboto, Arial, sans-serif;font-weight:normal;color:#000;font-size:2em;text-transform:uppercase;font-weight:bold;margin-bottom:20px;text-align: center;}

.register_signin_switcher {margin: 20px 0;text-align: center;}

#card_options_container .card_options_btn {display: inline-block;padding: 20px;min-width: 280px;font-size: 18px;text-transform: uppercase;margin: 10px 10px 20px;border: 2px solid #000;}

.card_options_btn:hover{color:red;border: 2px solid red !important;}

.clear_float {overflow: hidden;width: 100%;clear: both;}

.base-color {text-decoration: underline;color: #d50032;}

@keyframes autoh{

form {height:auto;}

to   {height: 0;}

}

@-webkit-keyframes autoh{

form {height:auto;}

to   {height: 0;}

}

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