vue 滑入滑出效果动画

<transition>
<span v-show="errorMessage" class="message"><span class="icon" :class="errorMessage=='审批完成'?'success':'error'"></span>{{errorMessage}}</span>
</transition>

.v-enter-active{
animation: slidein .3s linear;
}
.v-leave-active{
animation: slidein .3s linear reverse;
}

@keyframes slidein{
from{
transform: translateX(240px);
}
to{
transform: translateX(0px);
}
}

重点js里来控制这个errorMessage值有或者无就会滑入滑出