vue生命周期钩子个数是：11个。
export const LIFECYCLE_HOOKS = [
‘beforeCreate‘,
‘created‘,
‘beforeMount‘,
‘mounted‘,
‘beforeUpdate‘,
‘updated‘,
‘beforeDestroy‘,
‘destroyed‘,
‘activated‘,
‘deactivated‘,
‘errorCaptured‘
]
github地址：
https://github.com/vuejs/vue/blob/dev/src/shared/constants.js
原文：https://www.cnblogs.com/mengfangui/p/9969882.html