Question: Ive got the state: const [isPressed, setIsPressed] = useState(false)
Then I want to pass the setIsPressed when navigating to another sreen, which i wrote:
On the from Screen:
onPress{() => navigation.navigate('Map', {setIsPressed})}
On the to Screen:
onPress={() => {navigation.navigate('DM'); setIsPressed(true);}}

However, I get an error saying 'setIsPressed is not a function' when pressing on the To Screen button

How do I fix this?

Answer: 
There is no method like getElementByClassName. But getElementsByClassName (note the "s"). simply get the first element from array.

```
var helloBtn = document.getElementsByClassName("hello-btn")[0];

```

should work as intended.
Try JQuery .bind() method, I used at several places

<https://api.jquery.com/bind/>