Tutorial on how check if a variable is defined, if a property exists in an object, and if a property exists in window.

Tutorial on how to fix infinite loop in useEffect using dependency array, useMemo, and useCallback.

Tutorial on how to delete an item from the state array in React, using both index and value. Also discussed deleting items from an array of objects.

Tutorial on how to filter array of object using different conditions

Guide on fixing the error - Rendered fewer hooks than expected. This may be caused by an accidental early return statement.

Guide on fixing the error - React Hook "useState" is called conditionally. React Hooks must be called in the exact same order in every component render. Did you accidentally call a React Hook after an early return?