I define a state like this,
const [title, changeTitle] = useState('');
So, the value of the variable Title is an empty string.
Then, I receive a JSON, form :{active: '1', name: 'New Form', …}
I need to change the state title to New Form. changeTitle(form.name);
But then, the variable Title is undefined.
What am I doing wrong?
Make sure that when you call changeTitle the variable form.name is not undefined.
If you are using react hooks and the variable form is a state or prop you can use a useEffect and change the state of title only when the variable form.name is defined
useEffect(() => {
if(form.name){
changeTitle(form.name);
}
},[form.name]);