Question

我正在尝试使用新的carrier_id和name更新特定的数组索引。

但是，我遇到了一个令人困惑的作业问题。

注释行中有Note #1且nData看起来很好，否则它的order属性在调用updateNormalizedData之前似乎已设置。

let data = JSON.parse('[{"order":{"po_no":"po_2019","ship_details":{"carrier_id":1044777,"method":"FREE Shipping"},"sub_total":0},"items":[{"header":{"set_no":0,"carrier_id":104777,"po_no":"po_2019"},"line":{"item_id":"ABC RE1000","line_no":0}},{"header":{"set_no":0,"carrier_id":104777,"po_no":"po_2019"},"line":{"item_id":"ABC DA1111","line_no":1}}]}]');
let numSet = 0;
let numLine = 1;
let args = {"carrier_id": 555111};

function normalizeData(data, numSet, numLine, args) {
  let i = 0, j = 0, l = data.length;
  let normalizedDataSet = [];

  // console.log(data[i])

  for (i = 0; i < l; i++) {
    let m = data[i]['items'].length;
    for (j = 0; j < m; j++) {
      data[i]['items'][j]['order'] = { ...data[i]['order'] }; // Destructure data to assign value, not object reference
      normalizedDataSet.push(data[i]['items'][j]);
    }
  }

  // console.log('nData',  normalizedDataSet);
  updateNormalizedData(normalizedDataSet, numSet, numLine, args); // Note #1
}

function updateNormalizedData(normalizedDataSet, numSet, numLine, args) {
  let i;
  let n = normalizedDataSet.length;
  let newNormal = [];

  for (i = 0; i < n; i++) {
    let index = { ...normalizedDataSet };

    if (numSet === index[i]['header']['set_no'] && numLine === index[i]['line']['line_no']) {
      let shipMethods = JSON.parse('[{"id":103366,"name":"FREE Shipping"},{"id":200200,"name":"BEST"},{"id":555111,"name":"COLLECT"}]');
      let shipMethod = shipMethods.filter(item => { return item.id === args.carrier_id }); // [0]['name'];
      console.log("date_updated this index", i);
      index[i]['order']['ship_details']['carrier_id'] = args.carrier_id;
      index[i]['order']['ship_details']['method'] = shipMethod[0]['name'];
      newNormal.push(index[i]); // Should update order.ship_details.carrier_id
    } else {
      console.log("Use original index");
      newNormal.push(normalizedDataSet[i]); // Should NOT update order.ship_details.carrier_id
    }
  }

  console.log('new normal', JSON.stringify(newNormal));
}

normalizeData(data, numSet, numLine, args);

我不确定如何在调用分配该属性的函数之前分配该属性。

我猜可能与数据解构有关，但我不确定。

非常感谢任何指导/帮助。

在此示例中，我尝试仅使用新的正常订单数据更新{ "setNo": 0, "lineNo": 1 }，但同时设置了第0行和第1行。

在将数组索引推送到新数组之前如何分配它

0 个答案: