useEffect(()=>{ console.log(‘hello’)},[state1,state2]])Which statement is true for the above code?
Question
Which statement is true for the above code?
useEffect(()=>{ console.log('hello')},[state1,state2])
Solution
The statement is written in JavaScript, specifically using React Hooks. The useEffect
hook is used to perform side effects in function components.
Here's a step-by-step breakdown of the code:
-
useEffect
is a function that takes two arguments: a function and an array. -
The function
() => { console.log('hello') }
is the first argument touseEffect
. This function will be executed after the render is committed to the screen. -
The array
[state1, state2]
is the second argument touseEffect
. This is the dependency array.
The true statement for the above code is:
"The console will log 'hello' every time either state1
or state2
changes. If neither state1
nor state2
changes between renders, the function will not be executed."
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