onBeforeMount(() => {
    
    
        console.log('组件挂载之前执行 ===> onBeforeMount')

    })
    onMounted(() => {
    
    
        console.log('组件挂载完毕 ===> onMounted')

    })
    // 依赖于组件内响应式数据的变化
    onBeforeUpdate(() => {
    
    
        console.log('组件更新之前 ===> onBeforeUpdate')

    })
    onUpdated(() => {
    
    
        console.log('组件更新完毕 ===> onUpdated')
       

    })
    onBeforeUnmount(() => {
    
    
        console.log('组件卸载之前 ===> onBeforeUnmount')
    })
    onUnmounted(() => {
    
    
        console.log('组件卸载完毕 ===> onUnmount')
    })