Lalit Baghel

Software Developer

23rd December, 2022

How to Use HTML5 Local Storage for Data Persistence in Web Applications

HTML5 local storage is a feature of modern web browsers that allows you to store data locally on the user's device. This data is stored in key-value pairs and can be accessed even after the user has closed the browser and returned to the website at a later time.

To use local storage in your HTML code, you will need to follow these steps:

Check if the browser supports local storage using the localStorage property of the window object.

if (window.localStorage) {
  // Local storage is supported
} else {
  // Local storage is not supported
}

To set a value in local storage, use the setItem method of the localStorage object. This method takes two arguments: a key and a value.
```
localStorage.setItem('key', 'value');
```
To retrieve a value from local storage, use the getItem method of the localStorage object. This method takes a single argument: the key of the value you want to retrieve.

var value = localStorage.getItem('key');

To remove a value from local storage, use the removeItem method of the localStorage object. This method takes a single argument: the key of the value you want to remove.
```
localStorage.removeItem('key');
```
To clear all values from local storage, use the clear method of the localStorage object.
```
localStorage.clear();
```

HTML5 local storage is a powerful tool that can help you store data locally on the user's device and improve the user experience of your web applications.

Lalit Baghel

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