Forgetting to export a component from its file
Handling Missing Component Exports in React A common mistake in React development is forgetting to export a component from its file, which leads to “Component not found” errors when trying….
Tag: React troubleshooting
Conflicting multiple default exports in the same file
Handling Multiple Default Exports in a Single File Having multiple default exports in one file is invalid JavaScript syntax and will cause errors. Here’s how to properly structure your exports:….
Using an object directly inside JSX instead of JSON.stringify
Properly Displaying Objects in JSX When you need to display an object’s contents in JSX, you can’t render the object directly. Here are the correct approaches: The Problem This doesn’t….
Using reserved JavaScript keywords as component names
Avoiding Reserved Keywords as React Component Names Using JavaScript reserved keywords as component names can cause syntax errors and unexpected behavior. Here’s how to handle this properly: Common Problematic Component….
Forgetting to use React Fragments (<>…)
The Importance of React Fragments and How to Use Them Properly A common mistake in React development is forgetting to use Fragments when returning multiple elements, which leads to unnecessary….
Using history.push() in React Router v6 instead of useNavigate()
Using history.push() in React Router v6 In React Router v6, the traditional history.push() approach from v4/v5 has been replaced with the useNavigate() hook. Attempting to use the old history API….
Trying to use useNavigate() outside
Using useNavigate() Outside <BrowserRouter> A common React Router error occurs when trying to use the useNavigate() hook in components that aren’t wrapped in a <BrowserRouter> (or similar router component). This….
Using useReducer but forgetting to return a new state in the reducer function
Forgetting to Return New State in useReducer A common mistake when using useReducer is mutating the existing state or forgetting to return a new state object from the reducer function,….
Accessing state immediately after setState() before it updates
A common React pitfall is trying to access an updated state value immediately after calling setState or the state setter from useState. This doesn’t work because state updates are asynchronous….
Using useState but forgetting to initialize it with a default value
Forgetting to Initialize useState with a Default Value A common React mistake is declaring state with useState but forgetting to provide an initial value, which can lead to undefined errors….