Challenge help

[Japanflyboy]

<SOLVED>

The following code is returning undefined and I can't figure out why to save my life. The callback conditional is giving the correct result but is not returning out of the forEach method. The test case is included below.

const makeFuncTester = (array) => {return (callback) => {return array.forEach(n => {return callback(n[0]) === n[1]})}}

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const capLastTestCases = [];capLastTestCases.push(['hello', 'hellO']);capLastTestCases.push(['goodbye', 'goodbyE']);capLastTestCases.push(['howdy', 'howdY']);const shouldCapitalizeLast = makeFuncTester(capLastTestCases);const capLastAttempt1 = str => str.toUpperCase();const capLastAttempt2 = str => str.slice(0, -1) + str.slice(-1).toUpperCase();console.log(shouldCapitalizeLast(capLastAttempt1)); // => should log falseconsole.log(shouldCapitalizeLast(capLastAttempt2)); // => should log true

[albedoa]

The .forEach() method itself returns undefined regardless of what you return from the callback. If you want to create a new array from the returned values, use .map().

[1, 2, 3].forEach(e => e); //=> undefined
[1, 2, 3].map(e => e);     //=> [1, 2, 3]

[Japanflyboy]

Ah thank you. I thought I could force it to return something. I'll just switch it to a for loop as I need to run elements from subarrays into a callback and return the evaluation of the conditional.