javascript - I want to make the icon spin back when click on outside -

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this code used spin arrow head upward direction on click on icon .i want spin when click on out side of icon , want repeat processes when click on icon , click outside of icon.

<html>     <head>         <link rel="stylesheet" type="text/css" href="troll.css">         <meta http-equiv="content-type" content="application/xhtml+xml; charset=utf-8" />         <link rel="stylesheet" type="text/css" href="../project/bootstrap.min.css" />         <link rel="stylesheet" type="text/css" href="../project/style.css" />         <link rel="stylesheet" type="text/css" href="../project/font-awesome-4.2.0/css/font-awesome.min.css" />         <meta name="viewport" content="width=device-width, initial-scale=1.0">         <script>             function rotate(){                 document.getelementbyid("me").classname="spinner fa fa-caret-down";             }         </script>     </head>     <body>         <i onclick="rotate()" id="me" class=" fa fa-caret-down "></i>     </body> </html>

associated css:

.spinner {   -webkit-animation:spin 0.5s linear 1;   -moz-animation:spin 0.5s linear 1;   animation:spin 0.5s linear 1;   animation-fill-mode: forwards;  } @keyframes spin {   0% {     transform: rotate(0);   }   100% {     transform: rotate(180deg);   } } -webkit-keyframes spin {   0% {     transform: rotate(0);   }   100% {     transform: rotate(180deg);   } }

try this

function rotate(e){    document.getelementbyid("me").classname="spinner in fa fa-caret-down";    e.stoppropagation();  }    function resetrotation(){    document.getelementbyid("me").classname="spinner out fa fa-caret-down";  }    document.addeventlistener('click', resetrotation);
.spinner {    transition: 0.5s linear;  }    .spinner.in{    transform: rotate(180deg);  }  .spinner.out{    transform: rotate(0deg);  }
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css">  <i onclick="rotate(event)" id="me" class="spinner fa fa-caret-down "></i>


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