For循环无法正确存储数据，我的代码哪里存在错误？

API 探路者

2026-9-27

问题根源

你将EnrolledNum数组的初始化语句放在了第二个for循环内部，每次循环迭代时都会重新创建一个空数组覆盖之前的EnrolledNum变量，因此每轮只会往新的空数组里存入当前循环的数值，最终循环结束后只剩下最后一轮循环存入的结果。

修正方案

把var EnrolledNum = [];移到第二个for循环的外部即可，修改后代码如下：

fetchInitialData = async () => {
    this.setGlobal({ loading: true });
    const ep = `${process.env.REACT_APP_API}/partners/programs/list`;
    const results = await axios.get(ep);
    console.log("results data", results);

    var param1 = [];
    for (let i = 0; i < results.data.data.length; i++) {
      param1.push(results.data.data[i].id);
    }
    console.log("Param....", param1);

    // 数组初始化移到循环外部
    var EnrolledNum = [];
    for (let j = 0; j < param1.length; j++) {
      console.log('chekcingJ',j,'CheckingParam#', param1[j])

      const customers_ep = `${process.env.REACT_APP_API}/partners/programs/customers/${param1[j]}`;
      const customers = await axios.get(customers_ep);
      console.log("customers....", customers);

      EnrolledNum.push(
        customers.data.data.filter(
          e =>
            e.status_stage === "Accepted_Paid" ||
            e.status_stage === "Accepted_Manual"
        ).length
      );

      console.log("In the Loop: EnrolledNumber...", EnrolledNum);
    }

    console.log("Outside the Loop: EnrolledNumber...", EnrolledNum);
  };