Json阵列构建

Question

我有一个原始的"entry"one_answers"exit"数据，作为person的json（按日期排序）。

[{
   id: 1,
   dateTime: "2015-11-26T16:30:48.000Z",
   gateNumber: "192.168.0.202",
   gateType: "entry",
   personId: 207
}, // the exit object is missing for id=1. I need to create same object as exit vice versa...
{
   id: 2,
   dateTime: "2015-11-26T16:35:44.000Z",
   gateNumber: "192.168.0.201",
   gateType: "entry",
   personId: 207
}, {
   id: 3,
   dateTime: "2015-11-26T16:36:40.000Z",
   gateNumber: "192.168.0.202",
   gateType: "exit",
   personId: 207
}, {
   id: 4,
   dateTime: "2015-11-26T16:37:22.000Z",
   gateNumber: "192.168.0.201",
   gateType: "entry",
   personId: 207
}, {
   id: 5,
   dateTime: "2015-11-26T16:38:55.000Z",
   gateNumber: "192.168.0.201",
   gateType: "exit",
   personId: 207
}]

它需要像进入->退出->进入->退出一样。但有时会丢失一些"出口"或一些"入口"对象。

因此，我试图检测丢失的"对象"，并为大容量插入创建一个数组，因为差异为0秒，将失败。

所以，解决方案应该是针对上述情况；

[
   [1, "2015-11-26T16:30:48.000Z", "192.168.0.202", "exit", 207], 
   //... if there are any more..
]

Answer 1

var json_obj = [{
   id: 1,
   dateTime: "2015-11-26T16:30:48.000Z",
   gateNumber: "192.168.0.202",
   gateType: "entry",
   personId: 207
},
{
   id: 2,
   dateTime: "2015-11-26T16:35:44.000Z",
   gateNumber: "192.168.0.201",
   gateType: "entry",
   personId: 207
}, {
   id: 3,
   dateTime: "2015-11-26T16:36:40.000Z",
   gateNumber: "192.168.0.202",
   gateType: "exit",
   personId: 207
}, {
   id: 4,
   dateTime: "2015-11-26T16:37:22.000Z",
   gateNumber: "192.168.0.201",
   gateType: "entry",
   personId: 207
}, {
   id: 5,
   dateTime: "2015-11-26T16:38:55.000Z",
   gateNumber: "192.168.0.201",
   gateType: "exit",
   personId: 207
}];

your_new_array = json_obj.map(function(obj){
  if(!obj.hasOwnProperty('exit'))
     {
       obj.exit = 'exit value';
     }
  if(!obj.hasOwnProperty('entry'))
     {
       obj.entry = 'entry value';
     }
    return obj;
});
console.log(your_new_array);

https://jsfiddle.net/4f5Lpcge/小提琴：）我希望它有帮助！