this.$parent.xxx

[aclowner]

vue2: this.$parent.xxx
vue3: How to use the function of parent component?

[skirtles-code]

It should be the same in Vue 3:

https://jsfiddle.net/skirtle/m0ng1cqf/

There was a conversation in #454 about documenting the removal of $parent but it appeared to be a misunderstanding, possibly caused by a bug. $parent still exists and it is documented in the API Reference.

I would note that the use of $parent to call a function is generally discouraged. Ideally you should use events or props instead.

I'm going to close this for now. If I've misunderstood and you believe there's a documentation problem then please provide more information and we can reopen this. If you think you've found a library bug then you'll need to open an issue against the vue-next repository.