javascript - Running CSS keyframes on click -

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i'm trying have message appear when button clicked. want have "go!" fade in/out signify start of game when start button clicked. i'm trying javascript @ moment using jquery , library teacher gives combination of on mouse click , on screen tap 'ontap' lter use mobiles.

i have set add animation class when button clicked animation won't play, if add animation class beginning animation plays not when button clicked. went wrong adding javascript , how can achieve basic click button , text fades in/out?

<script type="text/javascript"> $(document).ready(function() {   $("#addfrogbut").ontap(function() {     $("#gotext").addclass(".goanim");   }); }); </script>  <head> #addfrogbut {   position: fixed;   bottom: 20px;   font-family: fantasy;   font-size: 32px;   left: 20px;   text-transform: uppercase;   text-shadow: -1px 0 white, 0 1px white, 1px 0 white, 0 -1px white;   padding: 2px 18px;   background-color: white;   border-radius: 12px;   text-align: center;   cursor: pointer; } #gotext {   position: fixed;   bottom: 50vh;   left: 42.5vw;   color: rgba(43, 96, 162, 0);   font-family: fantasy;   font-size: 60px;   text-transform: uppercase; } .goanim {   animation-name: go;   animation-duration: 3s;   animation-iteration-count: 1; } @keyframes go {   0% {     color: rgba(43, 96, 162, 0);   }   50% {     color: rgba(0, 0, 0, 1);   }   100% {     color: rgba(43, 96, 162, 0);   } } </head>  <body> <div id='addfrogbut'>add frog</div> <div id='gotext'>go!</div> </body>

i fixed appending whole div single id rather adding class existing div.


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