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Starter#Functions#Polyfill
Function.prototype.call Polyfill
Implement Function.prototype.call from scratch using the temporary-property trick and a Symbol key to avoid collisions.
By modernDev2026-06-05Medium
The native call lets you invoke a function with an explicit this and positional arguments. Rebuilding it from scratch forces you to reason about execution context, boxing primitives, and avoiding property collisions. The Symbol key is the detail that separates a good answer from a basic one.
Goal: Implement myCall with correct this binding, primitive boxing, and a collision-safe Symbol key.
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