Використання API веб-сховища в JavaScript для управління локальним сховищем

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Використання API веб-сховища в JavaScript для управління локальним сховищем image

Питання-відповіді

What is the purpose of using Web Storage API in JavaScript?

The Web Storage API provides a way for web applications to store key/value pairs in a client’s browser securely.

How can you use the Web Storage API to manage local storage in JavaScript?

You can use methods like `localStorage.setItem()`, `localStorage.getItem()`, and `localStorage.removeItem()` to interact with the local storage.

What is the difference between localStorage and sessionStorage in Web Storage API?

localStorage` stores data with no expiration date, while `sessionStorage` data is cleared when the page session ends.

Can you give an example of storing data using localStorage?

Sure! You can use `localStorage.setItem(‘username’, ‘JohnDoe’)` to store the username ‘JohnDoe’ in the local storage.

How can you retrieve data from localStorage?

You can use `localStorage.getItem(‘username’)` to retrieve the stored value for the key ‘username’.

What happens if you try to store an object directly in localStorage?

Objects need to be converted to strings using methods like `JSON.stringify()` before storing them in localStorage.

How can you retrieve an object from localStorage?

You must use `JSON.parse(localStorage.getItem(‘objectKey’))` to convert the string back to an object.

Can you delete a specific item from localStorage?

Yes, you can use `localStorage.removeItem(‘itemKey’)` to remove a specific item by its key.

How can Web Storage API help in managing user preferences on a website?

Web Storage API can be used to store and retrieve user preferences, such as theme settings or language choices, locally in the browser.

Is Web Storage API supported in all modern browsers?

Yes, the Web Storage API is widely supported in all major modern browsers, making it a reliable tool for client-side data storage.
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