rowClassName

The `rowClassName` property is a configuration option commonly found in data grid or table components, particularly in JavaScript frameworks or libraries. Its primary purpose is to allow developers to dynamically apply custom CSS classes to individual rows within the grid. This enables fine-grained styling and visual differentiation of rows based on their data content or state.

When used, `rowClassName` typically accepts a function as its value. This function receives information about the row being rendered, such as its data, index, or other relevant properties. The function's return value should be a string representing the CSS class (or multiple classes separated by spaces) that will be added to the row's HTML element. For example, a `rowClassName` function might check a status field in the row's data and return "error-row" if the status is "failed", or "success-row" if it's "completed".

This feature is invaluable for improving data readability and user experience. It facilitates the highlighting of important information, the indication of row statuses, or the application of specific visual treatments to different categories of data without altering the core grid structure. The flexibility of a function-based approach ensures that the styling can adapt intelligently to the data being displayed.