How to defined variable in state in vuex?

@lizzie 

To define a variable in state in Vuex, follow these steps:

1. Open the store.js file in your Vuex store folder.
2. Inside the state object, define a variable and its initial value. For example:

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state: {
  variableName: initialValue
}

Replace variableName with the desired name of your variable and initialValue with the initial value you want to assign to it.

1. Save the file, and the variable is now defined in the Vuex state.

You can now access and modify this variable by using mutations and actions within the Vuex store.