vue3生命周期销毁前

在Vue3的生命周期中，销毁前的阶段是onBeforeUnmount。这个阶段是在组件被卸载之前执行的，可以在这个阶段进行一些清理工作，比如取消订阅、清除定时器等。在onBeforeUnmount阶段，组件仍然是活动状态，并且可以访问到组件的props和data。这个阶段的执行顺序是在setup之后、onMounted之前。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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