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Local Storage is a technology that allows you to save data on your computer, laptop, phone, or tablet in a secure location. It differs from the cloud storage because it isn’t connected to the internet and it doesn’t require an account. In this article, we’ll learn What Is Local Storage and How to use Local Storage methods?
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What is Local Storage?
Local storage allows web applications can save data locally on the browser of the user. Local Storage has a similar function to cookies. It can store data on the browser of the user. Local Storage lets you keep information that is large up to 5 MB. In addition, local storage doesn’t transmit information to servers as cookies do.
Why should you use it?
Local storage is one type of web storage that keeps data for a long time. It could be a single one day or a week, or even a whole year.
Local Storage allows developers to store and retrieve data within the browser. The majority of popular and most frequently used browsers such as Chrome, Firefox and Safari are compatible with Local Storage. The data saved inside Local Storage will not expire. That means that the information will be available even when the tab or window in your browser is Closed.
How to use Local Storage Methods ?
Accessing Local Storage in familiar browsers like Chrome or Firefox is easy by opening Console, then selecting localStorage. In addition, to check the current data in Local Storage, select the Application tab.
Main methods in Local Storage you may be interested in, include:
1. key() : Key() can be used in an iterative statement to retrieve for all elements contained in Local Storage. For example:
var answer = localStorage.key(1);
2. setItem() : This method can be used to store items inside Local Storage.
localStorage.setItem ('a', 'Mickey'); localStorage.setItem ('b', 'Minnie');
3. removeItem(): This method can be used to delete an element out of Local Storage. This removeItem() technique requires an input key.
localStorage.removeItem('a'); // remove Mickey localStorage.getItem('a'); // returns undefined
4. getItem(): This getItem() method can be used to access or retrieve data from local Storage. This method takes keys as an argument. It then extracts the desired key using Local Storage.
localStorage.getItem('a'); // returns Mickey localStorage.getItem('b'); // returns Minnie
5. clear(): This method can be used to delete all data that are stored within Local Storage. It doesn’t require any parameters.
When to use Local Storage?
It is recommended to only make use of Local Storage when storing non-sensitive data. This will make sure that if anyone gains access to the computer and access to the computer, they will not be able steal crucial information. Local Storage can help store temporary data before before it is pushed to the server.
Limitations when using Local Storage
- Data security is not as safe
- Synchronous operation
- Storage space is limited.
With the rise of cloud storage, it has become increasingly difficult to keep your data locally. However, there are plenty of reasons why you should consider using local storage instead of evaluating entirely on the cloud. Hopefully through the above article, you will have a clearer view of Local Storage and choose the method that is right for you. Thanks for following our article!