How can I use destructuring in loops in JavaScript?
You can use destructuring in loops to extract values from arrays or objects easily. For example, in a for...of
loop, you can destructure an array like this:
const array = [[1, 2], [3, 4], [5, 6]];
for (const [a, b] of array) {
console.log(a, b);
}
Can you explain how that works with objects?
Sure! When dealing with objects, you can use destructuring in a for...in
loop or with Object.entries()
. Here's an example:
const obj = { x: 1, y: 2, z: 3 };
for (const [key, value] of Object.entries(obj)) {
console.log(key, value);
}
What if I want to skip some properties?
You can skip properties by using a conditional statement inside the loop. For example:
const obj = { x: 1, y: 2, z: 3 };
for (const [key, value] of Object.entries(obj)) {
if (key === 'y') continue; // Skip 'y'
console.log(key, value);
}
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