How to use Javascript's Local Storage

What is Local Storage?

Javascript's local storage is a free database to use. This can save data in keys similar to something like repl's DataBase.

What can it be used for?

Local Storage can save information so that when a program is stopped you can get the data back. You can also use it for things like a log-in system.

How to Make a Key

A key is a thing that has data saved to it. Accessing the key will give you the data. To make a key and have data saved to it you will have something like this:

`localStorage.setItem('Key', 'Value');

In this case, we are making a key called 'Key' and giving it a value of 'Value'. You are able to replace these with variables too.

How to Access a Key

Now if we have a value saved to a key we can access the value of the key.

const value = localStorage.getItem('Key');

The variable 'value' will now have the value 'Value' since of the key that we used. We can test this by printing it.

'console.log(value);'

The output should say 'Value' or whatever you made the Value for the Key.

How to Delete a Key

Let's say that you made a key by accident or something else and you want to get rid of a key.

localStorage.removeItem('Key');

This will now delete the key from the database.

Extra Information

• Local storage can only save 5MB of information

• Information is only saved on Devices so if you save something on one device it will not be accessible on another

• Altho Local Storage is easy to use it isn't very secure and shouldn't be used to save important information