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How does localStorage differ from sessionStorage in JavaScript?

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How does localStorage differ from sessionStorage in JavaScript?

Asked on Aug 05, 2025

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LocalStorage and sessionStorage are both part of the Web Storage API, used to store data on the client side. The key difference lies in their lifespan and scope.

// Storing data in localStorage
        localStorage.setItem("key", "value");

        // Retrieving data from localStorage
        const localValue = localStorage.getItem("key");

        // Storing data in sessionStorage
        sessionStorage.setItem("key", "value");

        // Retrieving data from sessionStorage
        const sessionValue = sessionStorage.getItem("key");

Additional Comment:

LocalStorage persists data even after the browser is closed and reopened, making it suitable for long-term storage.
SessionStorage only retains data for the duration of the page session, which ends when the page is closed.
Both storage types store data as key-value pairs and have a similar API.
Data stored in localStorage and sessionStorage is specific to the protocol of the page (http or https).

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How does localStorage differ from sessionStorage in JavaScript?

Asked on Aug 05, 2025

Answer

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