1、 beforeCreate(){},更新前
created(){},更新后
2、beforeMount(){},挂载前
mounted(){},挂载后
3、 beforeUpdate(){},更新前
updated(){},更新后
4、 beforeUnmount(){},销毁前
unmounted(){},销毁后
1、 beforeCreate(){},更新前
created(){},更新后
2、beforeMount(){},挂载前
mounted(){},挂载后
3、 beforeUpdate(){},更新前
updated(){},更新后
4、 beforeUnmount(){},销毁前
unmounted(){},销毁后