useEffect Hook takes in two arguments: a callback function and a dependencies array, from which dependencies are optional.useEffect(() => { callbackFunction(); }, [name]);If we provide a dependency item, say name, What does that mean?AIt means the callback function will be called on every rerender.BIt means the callback function will be called only once.CIt means the callback function will be called only if the dependencies value (in this case name) has changed.DAll of the above
Question
useEffect Hook takes in two arguments: a callback function and a dependencies array, from which dependencies are optional.useEffect(() => { callbackFunction(); }, [name]);If we provide a dependency item, say name, What does that mean?AIt means the callback function will be called on every rerender.BIt means the callback function will be called only once.CIt means the callback function will be called only if the dependencies value (in this case name) has changed.DAll of the above
Solution
The correct answer is C. It means the callback function will be called only if the dependencies value (in this case name) has changed. The useEffect hook in React allows you to perform side effects in function components. If you provide a dependencies array, the callback function will only run when the values in the dependencies array change. In this case, the callback function will only run when the value of 'name' changes.
Similar Questions
What does the useEffect hook do without a dependency array?
What is the purpose of the useEffect() hook in React functional components?(2 Points)To define custom hooks for reusable logicTo handle asynchronous operations within a componentTo perform side effects in functional componentsTo specify the dependencies of a component
What is the purpose of the second argument in the useEffect Hook?ATo specify the initial state of the componentBTo specify the dependencies of the effectCTo specify the effects of the componentDTo specify the props of the component
What is the syntax for the useEffect() hook in React, when you want to run a function inside the useEffect only when the app loads?AuseEffect(() => {}, []);BuseEffect(() => {}, [stateVariable]);CuseEffect(() => {});DAll of the above
We can’t write the useEffect without a dependency array. Is it true or false?
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