Instruction: Describe the concept of controlled components and how they differ from uncontrolled components.
Context: This question assesses the candidate's understanding of controlled components and their significance in form handling.
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Let me clarify this with a straightforward example. Imagine we have a text input field within our form. In a controlled component scenario, as the user types into this field, an onChange handler updates the component's state with the user's input. Consequently, the value of the input field is always synchronized with the state, ensuring the UI reflects the most current data.
On the other hand, uncontrolled components operate differently. Here, the form data is handled by the DOM itself, not by the React component state. We typically use ref to access the DOM nodes directly to...