Learn methods for searching an object and its prototype for the existence of properties.
To check for an item, get the value of the item by querying localStorage by its key.
You can use the FileReader API to create a data URL and pass this through localStorage.
A query string is used to store string data as part of a URL.
This task is possible in two lines using the FormData constructor and Object.fromEntries()
Any image can be copied to the clipboard with a little help from the HTML Canvas API.
Location by IP can resolved by a third-party service or in Node.js.
Make text appear on screen as if it is being typed live using the setInterval() function!