Retrieving cookie values in JavaScript requires parsing the document.cookie string to extract specific cookie data for application use. As the creator of CoreUI with extensive JavaScript experience since 2000, I’ve implemented cookie retrieval in countless production applications for user session management. The most reliable approach creates a helper function that splits the cookie string and finds the specific cookie by name. This method provides consistent cookie access while handling edge cases like missing cookies and special characters.

Setting cookies in JavaScript enables persistent data storage across browser sessions, perfect for user preferences, authentication tokens, and tracking information. As the creator of CoreUI with over 25 years of JavaScript experience, I’ve used cookies extensively in production applications for session management and user experience personalization. The most straightforward approach uses document.cookie with proper formatting for cookie name, value, expiration, and security options. This method provides reliable cross-session data storage while maintaining compatibility across all browsers.

Storing JWT tokens securely in Vue applications is crucial for preventing XSS attacks and maintaining robust authentication security. As the creator of CoreUI with extensive Vue security experience since 2014, I’ve implemented secure token storage in numerous enterprise applications. The most secure approach uses httpOnly cookies for token storage combined with memory-based state management for temporary access. This method prevents JavaScript access to tokens while maintaining seamless authentication flow throughout the application.

Persisting state with cookies is ideal when you need server-side access to client data or cross-domain sharing capabilities that localStorage cannot provide. As the creator of CoreUI with extensive React experience since 2014, I’ve used cookie-based persistence for authentication tokens, user preferences, and SSR-compatible state management. The most practical approach combines React hooks with the js-cookie library for reliable cookie manipulation. This method ensures data persistence while providing server-side accessibility for universal applications.

Cookie parsing is essential for handling user sessions, authentication tokens, and user preferences in Express applications that rely on HTTP cookies. With over 25 years of backend development experience and as the creator of CoreUI, I’ve implemented cookie-based authentication in countless web applications. The most reliable approach is using the cookie-parser middleware to automatically parse cookie headers and make them accessible via req.cookies. This provides secure, efficient cookie handling with support for signed cookies and proper security measures.