Answer
- localStorage: Persistent key-value storage.
- sessionStorage: Data persists for session only.
- IndexedDB: Client-side NoSQL database for structured data.
Quick Answer
localStorage: persists indefinitely across sessions, ~5-10MB, synchronous. sessionStorage: same API, but cleared when the tab closes, ~5MB. Cookies: ~4KB, sent with every HTTP request (useful for auth), can expire. IndexedDB: async, large storage (hundreds of MB), supports structured data and transactions — for complex offline apps and caching.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ