warmup10 min

Implement myApply (Function.prototype.apply)

Implement `myApply(fn, thisArg, argsArray)`

Same idea as myCall, but arguments are passed as a single array instead of individually — a standalone version of fn.apply(thisArg, argsArray). If argsArray is omitted or null, call fn with no arguments.

function sum3(a, b, c) { return this.multiplier * (a + b + c); }
myApply(sum3, { multiplier: 2 }, [1, 2, 3]); // 12

Your code

Results

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Stuck? This challenge exercises:

javascript.this-binding

Implement myApply (Function.prototype.apply)

Implement myApply(fn, thisArg, argsArray)

Implement myApply (Function.prototype.apply)

Implement myApply(fn, thisArg, argsArray)

Implement `myApply(fn, thisArg, argsArray)`

Implement `myApply(fn, thisArg, argsArray)`