How can I insert properties and functions inside a ref? Like this example: Then I want to use the propertie loading and the function onTest that way: How can I do that? Answer You cannot set ref on functional components because they don’t have an instance. You may not use the ref attribute on function components because they donâ€™t have instances. (source: https://reactjs.org/docs/refs-and-the-dom.html#accessing-refs) To make your example working you need to convert <MyComponent /> to class component.
I have a firebase storage path that looks like this. firebase.storage().ref(‘temp/test’) the “test” folder has about 25-50 files. I know there is not a way to delete the whole directory in firebase but Is there a way to iterate through all the files in a directory and deleting them one by one? Answer Is there a way to iterate through all the files in a directory and deleting them one by one? Yes, you can use the listAll() method, as follows: Note that: This method is only available for Firebase Rules Version 2 (add rules_version = ‘2’; at the top
I am getting this error – Can’t perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in a useEffect cleanup function. Here’s my useEffect hook, I used a ref called mounted to check if the component has unmounted or not but I am still getting the error when the component unmounts. (It takes about a minute for the error to show up). TIA Answer I usually store all my subscriptions on my component state and then call them when
I am trying to get a cookie specifically from a domain using this code: The problem is that the alert always says undefined. However, if I change to it works properly. How do I save the value to use later? Update: It appears that if I call alert(ID) from the chrome console after the script runs, it works. How can I set my code to wait until chrome.cookies.get finishes running? Answer Almost all Chrome API calls are asynchronous, so you need to use callbacks to run code in order: