Flip a Coin Online — Heads or Tails Simulator Animated coin flip simulator with heads/tails tracking and multiple flip options.

The Coin Flipper tool relies on React's useState hook to manage its state, which includes the current result of the flip, whether the coin is currently flipping, the history of past flips, and the number of coins to flip at once. When the user initiates a flip, the tool uses the setInterval function from the browser's API to rapidly change the displayed result between heads and tails, creating an animation effect that simulates the physical act of flipping a coin. This animation is achieved through a CSS transition on the coin element, which is toggled by adding or removing the 'animate-spin' class. The final result of the flip is determined by Math.random(), ensuring a truly random outcome.

Under the hood, the tool uses an array data structure to store the history of past flips, with each flip represented as either 'heads' or 'tails'. This array is updated every time a new flip is completed, and its length is capped at 50 to prevent excessive memory usage. When the user chooses to flip multiple coins at once, the tool uses a for loop to generate an array of random results, which are then added to the history array. The distribution of heads and tails in the history is visualized using a bar chart, where the width of each segment is calculated as a percentage of the total number of flips.

The tool's user interface is built using React components, with JSX used to define the structure and layout of the elements. The coin element itself is represented by an SVG icon, which is styled using CSS to create a visually appealing effect. When the user interacts with the tool, events such as clicks and changes to the number of coins to flip are handled using React's event handling mechanisms, including the useCallback hook to memoize functions and prevent unnecessary re-renders. The useEffect hook is used to clean up any pending intervals when the component is unmounted, preventing memory leaks.