-
Notifications
You must be signed in to change notification settings - Fork 0
/
findKey.js
54 lines (44 loc) · 1.36 KB
/
findKey.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
const assertEqual = function(actual, expected) {
if (actual === expected) {
console.log(`✅✅✅ Assertion Passed: ${actual} === ${expected}`);
} else {
console.log(`❌❌❌ Assertion Failed: ${actual} !== ${expected}`);
}
};
//----------------------------------------------------------//
const findKey = function(object, callback) {
for (let key of Object.keys(object)) {
if (callback(object[key])) {
return key;
}
}
};
//Tests
// const result = 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((result), "noma");
// const result2 = findKey({
// "Blue Hill": { stars: 1 },
// "Akaleri": { stars: 3 },
// "noma": { stars: 2 },
// "elBulli": { stars: 3 },
// "Ora": { stars: 4 },
// "Akelarre": { stars: 3 }
// }, x => x.stars === 4); // => "Ora"
// assertEqual((result2), "Ora");
// const result3 = findKey({
// "Blue Hill": { stars: 1 },
// "Akaleri": { stars: 3 },
// "noma": { stars: 2 },
// "elBulli": { stars: 3 },
// "Ora": { stars: 2 },
// "Akelarre": { stars: 3 }
// }, x => x.stars === 5); // => undefined
// assertEqual((result3), undefined);
module.exports = findKey;