How can i use a return value of a function in a UseEffect function in java script

Question

How can i use a return value of a function inside a useEffect function in java script

Answer 1

You should use the useState hook to save the function return value:

You can also use the useRef hook and set its current property.

function calculateValue() {
return 42;
}

const SomeComponent = (props) => {
const [value, setValue] = useState(null);
const refValue = useRef(null);

useEffect(() => {
const calculatedValue = calculateValue();
// approach 1
setValue(calculatedValue);
// approach 2
refValue.current = calculatedValue();
}, []);

return (
<>
<label>{value}</lavel>
<label>{refValue.current}</lavel>
</>
);
}

for more information:
Intro to React => Lifecycle Methods => The useEffect Hook
https://www.sololearn.com/Course/react/?ref=app