Check Your Reaction Time Test your reaction time by clicking when the screen color changes.

The Reaction Time Test utilizes the React library to manage its state and handle user interactions. It employs the useState hook to store the current test state, reaction time, and results in memory. The tool also uses the useRef hook to create references to DOM elements and store timeout IDs, allowing it to clear timeouts when necessary. The useEffect hook is used to clean up any pending timeouts when the component unmounts.

Under the hood, the tool works by generating a random delay between 1.5-5.5 seconds using the Math.random function, which is then used to schedule a timeout using the setTimeout function from the browser's Web APIs. When this timeout expires, the tool updates its state to "ready" and records the current time using the Date.now method. The user's reaction time is then calculated by subtracting the recorded time from the time at which they clicked the button.

The tool stores up to five recent results in an array using the setResults function, allowing it to calculate an average reaction time. It also uses a rating system to categorize reaction times into different ranges, such as "Incredible" or "Average", based on predefined thresholds. The getRating function takes the reaction time as input and returns an object containing the corresponding rating text and color.

The tool's user interface is built using JSX, which allows it to render dynamic content based on its current state. It uses CSS classes to style its elements and apply different colors and layouts depending on the test state. The glass-card class is used to create a card-like layout for displaying statistics and results, while the glass-button class is used to style the reset button.

The tool's algorithms are implemented using JavaScript functions, which are called in response to user interactions or timer events. The startTest function initiates a new test by scheduling a timeout and updating the tool's state, while the handleClick function handles user clicks and updates the reaction time and results accordingly. The getRating function uses simple conditional statements to determine the rating based on the reaction time.

The tool does not rely on any external libraries or file formats, instead using only built-in browser APIs and JavaScript functions to implement its functionality. It runs entirely on the client-side, using React to manage its state and render its user interface. The use of TypeScript allows for static type checking and improved code maintainability, while the 'use client' directive at the top of the file enables React's client-side rendering mode.