使用遍历 2 个数组的循环将键/值添加到空对象中

Question

You are given an array of names along with an array of phone numbers. Using a loop, populate the existing phoneBook object to build a proper phonebook with the keys being people's names and the values being their respective phone numbers.

I don't know where to begin I am fairly new on how to add keys : values using a loop from an array into an object

const phoneBook = {


};

for (let i = 0; i < names.length; i++)

const names = ['Mira', 'Royce', 'Kathie'];

const numbers = ['3234958675', '9164059384', '4154958675']

console.log(phoneBook["Mira"]); //=> 3234958675

console.log(phoneBook["Royce"]); //=> 9164059384

console.log(phoneBook["Kathie"]); //=> 4154958675

I am getting undefined obviously as I haven't figured out how to get the loop to populate the object from the names and numbers arrays

Answer 1

You can loop over names and their indices (with a forEach loop), and get the appropriate number from the numbers array (using the index):

 const phoneBook = {}; const names = ['Mira', 'Royce', 'Kathie']; const numbers = ['3234958675', '9164059384', '4154958675'] names.forEach( (name, i) => phoneBook[name] = numbers[i] ); console.log(phoneBook["Mira"]); //=> 3234958675 console.log(phoneBook["Royce"]); //=> 9164059384 console.log(phoneBook["Kathie"]); //=> 4154958675

Answer 2

for (let i = 0; i < names.length; i ++){ let name = [] name.push(names[i]) phoneBook[name] = numbers[i] }