Can you give me some examples of how to use the map function with arrays?
Sure! The map function creates a new array by applying a function to each element of the original array. For example, if you have an array of numbers and you want to double each number, you can do it like this: const numbers = [1, 2, 3]; const doubled = numbers.map(num => num * 2);
This will give you [2, 4, 6]
.
That's helpful! Can you show me another example, maybe with strings?
Absolutely! If you have an array of strings and you want to convert them to uppercase, you can use map like this: const fruits = ['apple', 'banana', 'cherry']; const uppercasedFruits = fruits.map(fruit => fruit.toUpperCase());
This will result in ['APPLE', 'BANANA', 'CHERRY']
.
What if I want to use an object in the array?
Great question! If you have an array of objects, you can map over them to extract a specific property. For example: const users = [{name: 'Alice'}, {name: 'Bob'}, {name: 'Charlie'}]; const names = users.map(user => user.name);
This will give you ['Alice', 'Bob', 'Charlie']
.
Thanks! This is really clear.
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