let[count,setCount] = useState(0);
let[age,setAge] = useState(20);
<button onClick={()=>{
setCount(count+1)
useEffect(()=>{
if(count !=0 && count<3){
setAge(age+1)
}
},[count])
}}>누르면한살먹기</button>
이렇게 입력하는 수업중에 콘솔창에 이런 에러가 뜨네요.
react-dom.development.js:14906 Uncaught Error: Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons: 1. You might have mismatching versions of React and the renderer (such as React DOM) 2. You might be breaking the Rules of Hooks 3. You might have more than one copy of React in the same app See https://reactjs.org/link/invalid-hook-call for tips about how to debug and fix this problem. at Object.throwInvalidHookError (react-dom.development.js:14906:1) at useEffect (react.development.js:1520:1) at App.js:33:1 at HTMLUnknownElement.callCallback (react-dom.development.js:3945:1) at Object.invokeGuardedCallbackDev (react-dom.development.js:3994:1) at invokeGuardedCallback (react-dom.development.js:4056:1) at invokeGuardedCallbackAndCatchFirstError (react-dom.development.js:4070:1) at executeDispatch (react-dom.development.js:8243:1) at processDispatchQueueItemsInOrder (react-dom.development.js:8275:1) at processDispatchQueue (react-dom.development.js:8288:1)
