javascript - 比较 AngularJS 中的 Angular 副本和更改的数据并仅发送更改的项目

Question

我有一个编辑表单。
我在哪里获得 JSON 为

$scope.allDeviceData= [];   

和 Angular 复制为

$scope.allDeviceDataCopy= [];

allDeviceData 是:

allDeviceData = [{
  "id": "31",
  "log_time": "7",
  "record_mode": "0",
  "upload_interval": "6",
  "sampling_time": "3",
  "log_method": "3",
  "ntp_setting": "0",
  "header1": "MyCloud0",
  "footer": "MyCloud",
  "autodownload": "0",
  "autoupdatetime": "0",
  "downloaded_time": null,
  "unit_id": "144",
  "userid": "19",
  "unit_name": "living window",
  "mac_id": "C20BFCFF9C44",
  "group_name": "testing",
  "mdlno": "Mmag",
  "battery_val": "0",
  "battery": {
    "id": "2604709",
    "battery_val": "3.3",
    "network_val": "-62",
    "updatetime": "2018-09-14 00:43:35 ",
    "unit_id": "144"
  },
  "channelinfo": [{
    "id": "5462236",
    "chkey": "ch1",
    "chvalue": "0",
    "updatetime": "2018-09-14 00:43:35 ",
    "unit_id": "144"
  }],
  "channels": [{
    "id": "59",
    "chkey": "ch1",
    "unit_id": "144",
    "input_type": "Magnetic",
    "unit": "unit",
    "decimal_value": "0",
    "offset_value": "0",
    "gain_value": "0",
    "range_low": "0",
    "range_high": "0",
    "high_name": "opened",
    "low_name": "0",
    "Condition_high": "0",
    "Condition_low": "0",
    "Threshold_high": "4",
    "Threshold_low": "0",
    "reset_low": "0",
    "reset_high": "0",
    "activate_high": "0",
    "activate_low": "0",
    "notify_high": "1",
    "notify_low": "0",
    "Judgtime_high": "4",
    "judgetime_low": "0",
    "tempchvalue": "0",
    "chtempvalue1": "0"
  }]
}]

我想比较 allDeviceData 和 allDeviceDataCopy 并仅发送更改的字段并删除其他字段。

我该怎么做？

Answer 1

可以使用 angular.equals( https://docs.angularjs.org/api/ng/function/angular.equals ) 来获取更改后的数据是否为脏数据。如果脏，那么您可以迭代并比较这些值并获取更改后的值。