Tencent IMWeb Frontend Team
Sep 3, 2017 · Frontend Development
Why Does let Appear Not to Be Hoisted? Unraveling JavaScript’s Variable Lifecycle
This article chronicles the author’s two‑month journey of understanding JavaScript’s let declaration, exploring its block scope, temporal dead zone, per‑iteration bindings, and the nuanced differences from var and function hoisting, while debunking common misconceptions with code examples and spec references.
ES6JavaScriptfrontend
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