How to remove local storage value only on initial loads of the component-CodePudding

I have a situation where I have some values in stored local storage. I want to clear those values when the page loads for the first time. But, after that, if I want to set those values again,I should be able to do this and page refresh shouldn't remove this as well. So. the question is: are there any ways of doing something only on initial loads of the component and don't do anything afterwards.

CodePudding user response：

Yes, that is the typical use of sessionStorage. It works the same way as localStroage, but it will be clear after users closes browsers. However, between page reloads, it is preserved.

You can use it like this:

// Save data to sessionStorage
sessionStorage.setItem('key', 'value');

// Get saved data from sessionStorage
const data = sessionStorage.getItem('key');

CodePudding user response：

You can create a count variable and when react app runs for the first time useEffect will remove required items from localstorage and will set count to 1 in localstorage and then everytime component re-renders it will check in localstorage if count is 1 if it is 1 then it won't remove item from localstorage.

useEffect(() => {
  if(localStorage.getItem('count') !== '1') {
    localStorage.removeItem('val')
    localStorage.setItem('count', '1')
  }
  set()
}, [])

const set = () => {
  localStorage.setItem('val', 'skndkj')
}