React Starter

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Last edited Jun 5, 2021

Created on Jun 5, 2021

This example demonstrates a React-controlled dropdown menu for selecting a pet, with the chosen value displayed as a label above the selection. The interface updates the selected option in real time through React’s `useState` hook, passing the current value and an update function to a reusable `Dropdown` component. The component maps over an array of pet options to generate `<option>` elements, using the `selected` attribute to highlight the active choice. The code relies on React 16.9, ReactDOM, and d3.v5, though the actual visualization is minimal—just the interactive form controls rendered as SVG-ready HTML.

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