获取JSON数组的长度

// 假设我们有一个JSON数组
const jsonArray = [
  { "name": "Alice", "age": 25 },
  { "name": "Bob", "age": 30 },
  { "name": "Charlie", "age": 35 }
];

// 获取数组的长度
const arrayLength = jsonArray.length;

console.log(arrayLength); // 输出: 3

let jsonArray;

// 确保在使用之前正确初始化
jsonArray = [
  { "name": "Alice", "age": 25 },
  { "name": "Bob", "age": 30 }
];

const arrayLength = jsonArray.length;
console.log(arrayLength); // 输出: 2

function getNestedArrayLength(jsonArray) {
  let totalLength = 0;

  jsonArray.forEach(item => {
    if (Array.isArray(item)) {
      totalLength += getNestedArrayLength(item);
    } else {
      totalLength++;
    }
  });

  return totalLength;
}

const nestedJsonArray = [1, [2, 3], [4, [5, 6]]];
const length = getNestedArrayLength(nestedJsonArray);
console.log(length); // 输出: 6