Answer
localStorage: persistent key-value.
sessionStorage: session-limited key-value.
cookies: small data sent with requests, used for auth.
Quick Answer
localStorage: persists data across browser sessions (survives tab close), domain-scoped, ~5MB, synchronous API. sessionStorage: same API but cleared when the tab closes. Cookies: small (~4KB), sent with every HTTP request (good for auth tokens), can have expiry. IndexedDB: full client-side database — async, large storage, good for complex offline apps.
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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