jquery - not triggering an event when moving the mouse too fast -


is possible not trigger icon when move mouse fast on button? because when move mouse fast on button icon moves down :before , :after elements doesn't trigger. , if move multiple times on button icon triggers late moves , down multiple times.

http://codepen.io/earbot/pen/dvezbw

function easeinoutback(t, b, c, d, s) {    if (s == undefined) s = 1.70158;    if ((t /= d / 2) < 1) return c / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)) + b;    return c / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2) + b;  }    $('#head-btn').on('mouseenter', function() {    var bubu = function() {      $('#head-io').animate({        top: '50%',      }, 500);    }    settimeout(bubu, 500);  }).on('mouseleave', function() {    $('#head-io').animate({      top: '-100%',    });  });
body {    background: #222;  }    #head-btn {    position: absolute;    top: 50%;    left: 50%;    transform: translate(-50%, -50%);    background-color: transparent;    border: 2px solid #fff;    color: #fff;    text-transform: uppercase;    font-size: .8rem;    letter-spacing: 4px;    height:2rem;    text-align: center;    overflow: hidden;    cursor: pointer;  }    #head-io {    position: absolute;    font-size: 2rem;    top: -100%;    left: 50%;    transform: translate(-50%);    z-index: 3;    color: #222;    transform:translate(-50%,-50%);  }    #head-btn:after {    content: '';    position: absolute;    left: calc(100% + 2px);    height: 100%;    width: 100%;    top: 0;      background: #fff;    -webkit-transition: 1000ms cubic-bezier(0.680, 0, 0.265, 1);    -webkit-transition: 1000ms cubic-bezier(0.680, -0.550, 0.265, 1.550);    -moz-transition: 1000ms cubic-bezier(0.680, -0.550, 0.265, 1.550);    -o-transition: 1000ms cubic-bezier(0.680, -0.550, 0.265, 1.550);    transition: 1000ms cubic-bezier(0.680, -0.550, 0.265, 1.550);    -webkit-transition-timing-function: cubic-bezier(0.680, 0, 0.265, 1);    -webkit-transition-timing-function: cubic-bezier(0.680, -0.550, 0.265, 1.550);    -moz-transition-timing-function: cubic-bezier(0.680, -0.550, 0.265, 1.550);    -o-transition-timing-function: cubic-bezier(0.680, -0.550, 0.265, 1.550);    transition-timing-function: cubic-bezier(0.680, -0.550, 0.265, 1.550);  }      /*\f2eb*/    #head-btn:before {    content: '';    font-size: 2rem;    text-align: center;    position: absolute;    height: 100%;    width: 100%;    background: #fff;    top: 0;    left: calc(-100% - 2px);    -webkit-transition: 1000ms cubic-bezier(0.680, 0, 0.265, 1);    -webkit-transition: 1000ms cubic-bezier(0.680, -0.550, 0.265, 1.550);    -moz-transition: 1000ms cubic-bezier(0.680, -0.550, 0.265, 1.550);    -o-transition: 1000ms cubic-bezier(0.680, -0.550, 0.265, 1.550);    transition: 1000ms cubic-bezier(0.680, -0.550, 0.265, 1.550);    -webkit-transition-timing-function: cubic-bezier(0.680, 0, 0.265, 1);    -webkit-transition-timing-function: cubic-bezier(0.680, -0.550, 0.265, 1.550);    -moz-transition-timing-function: cubic-bezier(0.680, -0.550, 0.265, 1.550);    -o-transition-timing-function: cubic-bezier(0.680, -0.550, 0.265, 1.550);    transition-timing-function: cubic-bezier(0.680, -0.550, 0.265, 1.550);  }    #head-btn:hover:after {    left: calc(50% - 2px);  }    #head-btn:hover:before {    left: calc(-50% + 2px);  }
<link href="http://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css" rel="stylesheet"/>  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <button class="btn btn-lg" id="head-btn">i'm interested <i class="ion-ios-email"id="head-io"></i></button>

if using css transitions why don't keep way ?, instead of js styles:

#head-io {   ...   transition:top .5s linear; } #head-btn:hover #head-io {   top:0;   transition-delay:.5s; }

codepen demo


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