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findKey.js
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findKey.js
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const findKey = function(object, callback) {
let keyArray = Object.keys(object);
for (const key of keyArray) {
if (callback(object[key])) {
return key;
}
}
}
const assertEqual = function(actual, expected) {
if (actual === expected) {
console.log(`🚀🚀🚀 Assertion Passed: ${actual} === ${expected}`);
} else if (actual !== expected) {
console.log(`🚫🚫🚫 Assertion Failed: ${actual} !== ${expected}`);
}
};
assertEqual(findKey({
"Blue Hill": { stars: 1 },
"Akaleri": { stars: 3 },
"noma": { stars: 2 },
"elBulli": { stars: 3 },
"Ora": { stars: 2 },
"Akelarre": { stars: 3 }
}, x => x.stars === 2), "noma")
assertEqual(findKey({
"Blue Hill": { stars: 1 },
"Akaleri": { stars: 3 },
"noma": { stars: 2 },
"elBulli": { stars: 3 },
"Ora": { stars: 2 },
"Akelarre": { stars: 3 }
}, x => x.stars === 3), "Akaleri")
assertEqual(findKey({
"Blue Hill": { stars: 1 },
"Akaleri": { stars: 3 },
"noma": { stars: 2 },
"elBulli": { stars: 3 },
"Ora": { stars: 2 },
"Akelarre": { stars: 2000 }
}, x => x.stars === 2000), "Akelarre")