在JSON中更新elemint将更新所有

本文介绍了在JSON中更新elemint将更新所有的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我解析了一个JSON对象，我试图向下导航至SHIPPINGCOMMENTS并更新它，但是当我这样做时，它将更新具有该名称的所有单元，而不只是一个名称.

I have a JSON object parsed and I am trying to navigate down to SHIPPINGCOMMENTS and update it, but when I do, it updates all cells with that name instead of just the one.

{
    "id": 1402846607011,
    "status": "unsaved",
    "accounts": [
        {
            "compid": 919759,
            "compname": null,
            "products": [
                {
                    "BCINUM": "539504",
                    "ITEMUNIT": "EA",
                    "ORDERDETAILS": [
                        {
                            "SHIPDATEID": "69230",
                            "SHIPPERIODID": "2096",
                            "QUANTITY": "1"
                        },
                        {
                            "SHIPDATEID": "69231",
                            "SHIPPERIODID": "2096",
                            "QUANTITY": "2"
                        }
                    ],
                    "SHIPPINGCOMMENTS": "sooner"
                }
            ]
        },
        {
            "compid": 920001,
            "compname": null,
            "products": [
                {
                    "BCINUM": "539504",
                    "ITEMUNIT": "EA",
                    "ORDERDETAILS": [
                        {
                            "SHIPDATEID": "69230",
                            "SHIPPERIODID": "2096",
                            "QUANTITY": "1"
                        },
                        {
                            "SHIPDATEID": "69231",
                            "SHIPPERIODID": "2096",
                            "QUANTITY": "2"
                        }
                    ],
                    "POTEXT": "",
                    "SHIPPINGCOMMENTS": "sooner"
                }
            ]
        }
    ]
}

这是我要遍历的代码:

function updateComments(compID,bcinum,comment) {
    var accounts = runningOrders.accounts;
    var n = accounts.length;
    for (i = 0; i < n; i++) {
        if (accounts[i].compid == compID) {
            var p = accounts[i].products.length;
            for (ii = 0; ii < p; ii++) {
                if (accounts[i].products[ii].BCINUM == bcinum) {
                    accounts[i].products[ii].SHIPPINGCOMMENTS = comment;
                }
            }
        }
    }
}

函数调用为:

updateComments(919759,539504,sooner);

推荐答案

两个潜在问题:

在计算n时，您实际上不是在计算acconts数组的大小吗? (JSON)对象的名称是什么?
在示例函数调用中，您正在将两个对象中的名称更改为已经定义的名称.这是一个错误吗?

这段代码在node.js中对我有用:

This code is working for me in node.js:

function updateComments(compID,bcinum,comment) {
  var n = accounts.accounts.length;
  console.log(n);
  console.log(accounts['accounts'][0].products);
  console.log(accounts['accounts'][1].products);
  for (i = 0; i < n; i++) {
    console.log('testing ', i, accounts.accounts[i].compid)
    if (accounts.accounts[i].compid == compID) {
      var p = accounts.accounts[i].products.length;
      console.log('Found compid', i, compID);
      for (ii = 0; ii < p; ii++) {
        if (accounts.accounts[i].products[ii].BCINUM == bcinum) {
          console.log('Found bcinum', ii, bcinum)
          accounts.accounts[i].products[ii].SHIPPINGCOMMENTS = comment;
        }
      }
    }
  }
  console.log(accounts['accounts'][0].products);
  console.log(accounts['accounts'][1].products);
}

accounts = {
"id": 1402846607011,
"status": "unsaved",
"accounts":
 [
    {
        "compid": 919759,
        "compname": null,
        "products": [
            {
                "BCINUM": "539504",
                "ITEMUNIT": "EA",
                "ORDERDETAILS": [
                    {
                        "SHIPDATEID": "69230",
                        "SHIPPERIODID": "2096",
                        "QUANTITY": "1"
                    },
                    {
                        "SHIPDATEID": "69231",
                        "SHIPPERIODID": "2096",
                        "QUANTITY": "2"
                    }
                ],
                "SHIPPINGCOMMENTS": "sooner"
            }
        ]
    },
    {
        "compid": 920001,
        "compname": null,
        "products": [
            {
                "BCINUM": "539504",
                "ITEMUNIT": "EA",
                "ORDERDETAILS": [
                    {
                        "SHIPDATEID": "69230",
                        "SHIPPERIODID": "2096",
                        "QUANTITY": "1"
                    },
                    {
                        "SHIPDATEID": "69231",
                        "SHIPPERIODID": "2096",
                        "QUANTITY": "2"
                    }
                ],
                "POTEXT": "",
                "SHIPPINGCOMMENTS": "sooner"
            }
        ]
    }
]
}

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