React Js setTimeout Method
React Js setTimeout Method:The setTimeout method in React.js is a built-in function that allows you to delay the execution of a piece of code or a function call. It takes two parameters: a function or an expression to be executed, and a time delay specified in milliseconds.
After the specified delay, the function is added to the event loop and executed. This is commonly used in React.js applications for tasks such as animation delays, timed updates, or to simulate asynchronous behavior.
It provides a way to schedule code execution after a certain period, enhancing the responsiveness and interactivity of the user interface.
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What is the purpose of the `setTimeout` method in React.js?
The code snippet provided is a React.js component that demonstrates the usage of the setTimeout method.
Upon rendering, the component sets the initial state of the button color to 'red' and the button text to 'Red button'. The useEffect hook is then used to schedule a change in the button color and text after a delay of 3 seconds.
Inside the useEffect hook, a setTimeout function is called, which updates the state variables color and text to 'blue' and 'Blue button', respectively, after the specified delay.
To ensure proper cleanup, a cleanup function is returned from the useEffect hook. This function clears the timeout using clearTimeout when the component unmounts or when the color state changes
Output of React Js setTimeout Method
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