javascript - vue parent-child component passes data

Question

The parent component passes an array to the child component. This data needs to be called in the child component. How to pass it?

1. The child component uses props to receive the data of the parent component and cannot be used in js.
2. Use the wacth method to monitor and not execute it at all.

Please answer from the master. Thank you!

Answer 1

Props cannot be used in js? How do you use it

Answer 2

Post the code and see how you use it?

Answer 3

You should be talking about the child component modifying the data passed by the parent component.

vue2 now has a one-way data flow, and child components are not allowed to modify the data of the parent component. Please see the documentation for details.
Link: https://cn.vuejs.org/v2/guide... After clicking the link, search for One-way data flow
The document also has detailed instructions on how to handle the situation when a child component wants to operate the data of the parent component.

Answer 4

On vueX