Questions
7 of 18
11. What is a thunk in Redux?
22. What is the difference between redux-thunk and createAsyncThunk?
33. How does createAsyncThunk simplify async actions?
44. What are the lifecycle actions automatically created by createAsyncThunk?
55. How do you handle pending, fulfilled, and rejected states in slices?
66. What are the advantages of using createAsyncThunk over manual thunks?
77. How do you pass parameters to a thunk function?
88. How do you handle API errors inside a thunk?
99. How can you cancel a running thunk or API call?
1010. How can you chain multiple async thunks?
1111. How can you use getState and dispatch inside a thunk?
1212. How do you use thunks in combination with RTK Query?
1313. How do you test thunks and async actions?
1414. What are best practices for organizing async logic with thunks?
1515. How do you dispatch a thunk from a React component using hooks?
1616. How do you manage loading indicators with thunks?
1717. What’s the performance implication of using too many thunks?
1818. How can you refactor thunk-based APIs to RTK Query-based APIs?
RTKRTK
Basics
Slice
Actions
Reducers
RTK Query
Store
Thunk
Scenario Based
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7. How do you pass parameters to a thunk function?

Passing Parameters to Thunk Functions in Redux Toolkit

In Redux Toolkit, you can easily pass parameters to thunk functions created using createAsyncThunk. These parameters are received by the payload creator (the async function inside createAsyncThunk) and can be used for API calls, filtering, or conditional logic.

Steps to Pass Parameters
  1. 1

    1. Define Parameter in Payload Creator: The async function inside createAsyncThunk receives the parameter as its first argument.

  2. 2

    2. Dispatch with Argument: When dispatching the thunk, pass the argument like a regular function call — e.g., dispatch(fetchUser(5)).

  3. 3

    3. Use Parameter Inside Async Logic: Use the received parameter in API requests or any business logic.

Example: Passing Parameters to Thunk Function

You can pass any type of parameter — such as an ID, object, or filter — to dynamically control the async logic inside your thunk. This makes createAsyncThunk highly flexible for different API scenarios.