Understanding local storage
The Web Storage API for JavaScript provides mechanisms for browsers to store key/value pairs. For each web browser, the size of data that can be stored in web storage is at least 5 MB per origin. The localStorage is defined in the Web Storage API for JavaScript. We need to use JS interop to access localStorage on the browser.
The browser's localStorage is scoped to a particular URL. If the user reloads the page or closes and re-opens the browser, the contents of localStorage are retained. If the user opens multiple tabs, each tab shares the same localStorage. The data in localStorage is retained until it is explicitly cleared since it does not have an expiration date.
Tip
Data in a localStorage object that is created when using an InPrivate window or Incognito window is cleared when the last tab is closed.
These are the methods of localStorage:
key: This method returns the name of the indicated key based on its position in localStorage...
