Mutations and Actions in Vuex
Explore how Vuex handles state changes in Vue applications by using mutations for synchronous updates and actions for asynchronous operations. Understand committing mutations, dispatching actions, and how Vuex enhances state tracking and debugging to build predictable, maintainable applications.
We'll cover the following...
Mutations
One of the main problems with having a shared global state in a program is that it can lead to problems that are hard to debug. Changes to the state could be coming literally from anywhere in the application. So, tracking down exactly when and where the state is altered becomes very difficult.
The Vuex architecture deals with this problem by stating that components never change (or “mutate”) the state directly. Instead, when we want to update the state in some way, we need to use a mutation.
By requiring all state changes to be made via mutations, Vuex can keep track of them. This enables tools like the Vue devtools to present a log of all the mutations applied to the store, allowing us to see exactly what changes were made and when.
A mutation in Vuex occupies a similar role to a reducer in Redux. It takes the existing state and applies changes to it.
The ...