. 网站通知类消息肯定是需要计数器的
FortAwesome/vue-fontawesome
https://github.com/FortAwesome/vue-fontawesome
样例https://fontawesome.com/how-to-use/on-the-web/styling/layering
几种常用的类型
同源图标http://www.bootcss.com/p/font-awesome/#
<div class="fa-2x">
<span class="fa-layers fa-fw">
<i class="icon-bell-alt"></i>
<span class="fa-layers-counter" style="background:Tomato" v-show="count">{{ count }}</span>
</span>
</div>