LocalStorage
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Most Developers Still Confuse LocalStorage with SessionStorage
They look similar, but they behave completely differently, and knowing the difference can save you from serious data bugs. Introduction It’s one of those things every frontend dev thinks they understand… localStorage.setItem(“token”, “abc123”);sessionStorage.setItem(“token”, “abc123”); Both store data in the browser, both look persistent, and both use the same API. So what’s the big deal, right? The…
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Storing Complex Objects in localStorage
A practical, senior-dev guide to serializing complex data (Dates, Maps/Sets, BigInt, circular refs), compression, versioning/migrations, quotas, and rock-solid utilities for the real world. Introduction localStorage is deceptively simple: localStorage.setItem(“user”, JSON.stringify({ id: 1 })); …and you’re done, right? Not quite. Real apps need to persist complex objects: Dates, Maps/Sets, BigInts, nested graphs, and sometimes circular references. You’ll…
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