js for 多变量赋值

const arr = [1, 2, 3, 4, 5];
for (let [index, value] of arr.entries()) {
    console.log(`Index: ${index}, Value: ${value}`);
}

const obj = { a: 1, b: 2, c: 3 };
for (let [key, value] of Object.entries(obj)) {
    console.log(`Key: ${key}, Value: ${value}`);
}

let x = 0, y = 0;
for (let i = 0; i < 5; i++) {
    x += i;
    y += i * i;
    console.log(`x: ${x}, y: ${y}`);
}

const arr1 = [1, 2, 3];
const arr2 = ['a', 'b', 'c'];
for (let [i, j] of arr1.map((_, index) => [arr1[index], arr2[index]])) {
    console.log(`i: ${i}, j: ${j}`);
}

const obj1 = { a: 1, b: 2, c: 3 };
const obj2 = { a: 'A', b: 'B', c: 'C' };
for (let [key, value] of Object.entries(obj1).map(([k]) => [k, obj1[k], obj2[k]])) {
    console.log(`Key: ${key}, Value1: ${value[0]}, Value2: ${value[1]}`);
}

// 数组解构赋值示例
const arr = [1, 2, 3, 4, 5];
for (let [index, value] of arr.entries()) {
    console.log(`Index: ${index}, Value: ${value}`);
}

// 对象解构赋值示例
const obj = { a: 1, b: 2, c: 3 };
for (let [key, value] of Object.entries(obj)) {
    console.log(`Key: ${key}, Value: ${value}`);
}

// 多个变量赋值示例
let x = 0, y = 0;
for (let i = 0; i < 5; i++) {
    x += i;
    y += i * i;
    console.log(`x: ${x}, y: ${y}`);
}