js数组比较相等

function arraysEqual(a, b) {
    if (a === b) return true;
    if (a == null || b == null) return false;
    if (a.length !== b.length) return false;

    for (let i = 0; i < a.length; i++) {
        if (a[i] !== b[i]) return false;
    }
    return true;
}

function deepEqual(a, b) {
    if (a === b) return true;

    if (typeof a !== 'object' || a == null || typeof b !== 'object' || b == null) {
        return false;
    }

    let keysA = Object.keys(a), keysB = Object.keys(b);
    if (keysA.length !== keysB.length) return false;

    for (let key of keysA) {
        if (!keysB.includes(key) || !deepEqual(a[key], b[key])) {
            return false;
        }
    }

    return true;
}

// 使用示例
const arr1 = [1, 2, { a: 3 }];
const arr2 = [1, 2, { a: 3 }];
console.log(deepEqual(arr1, arr2)); // true