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无法从JS中的对象读取属性

[英]Can't read property from object in JS

I can't read Object property got with MongoDB. 我无法读取MongoDB附带的Object属性。 I work with MeteorJS. 我使用MeteorJS。 I create object like this 我创建这样的对象

header = ["name"];
values = ["word1", "word2"];
var tmp = {};
var data = new Array();
for (var cnt = 0; cnt < values.length; cnt++){
    for (var i = 0; i < header.length; i++) {
         temp[header[i]] = values[i];
    }
data.push(temp);

Than I insert into MongoDB like this 比我这样插入MongoDB

for (obj in data) {
    Badwords.insert(data[obj]);
}

I select data and cannot read property. 我选择数据,但无法读取属性。 There're browser console 有浏览器控制台

Badwords.findOne()

Object {_id: "uNRNDtp3RGrKA6gWz", "name": "word1"}

Badwords.findOne().hasOwnProperty("name")

false

Badwords.findOne().hasOwnProperty('name')

false

Badwords.findOne().hasOwnProperty('\"name\"')

false

Badwords.findOne().hasOwnProperty('\'name\'')

false

Badwords.findOne().hasOwnProperty("\'name\'")

false

Badwords.findOne().hasOwnProperty("\"name\"")

false

Badwords.findOne()

Object {_id: "uNRNDtp3RGrKA6gWz", "name": "word1"}

Badwords.findOne()["name"]

undefined

But

Badwords.findOne().hasOwnProperty("_id")
true

Maybe problem in property name: it is "name" , but not name . 也许是属性名称存在问题:它是"name" ,而不是name keys is undefined. keys是未定义的。

Badwords.findOne().keys
undefined

richardtz, I add method getKey() : richardtz,我添加了方法getKey()

var myObj = Badwords.findOne()
undefined

myObj.getkey = function(obj){
   var keys = [];
   for(var key in obj){
      keys.push(key);
   }
   return keys;
}
myObj.getkey(myObj)
["_id", "name", "getkey"]

Property name is "name" and has length 5. To check it: 属性名称为“名称”,长度为5。要检查它:

var prop = '';
for (var i in Badwords.findOne()) {
    prop = i;
}
"name"

prop.length
5

prop.charCodeAt(0)
65279

prop.charCodeAt(1)
110

I ran your code and found 2 bugs. 我运行了您的代码,发现了2个bug。 The first, was a missing } at the end of the first for loop and the second one, you define a tmp object and use temp instead. 第一个,在第一个for循环的末尾缺少},第二个,您定义了一个tmp对象并改用temp。 The correct code i ran were: 我运行的正确代码是:

header = ["name"];
values = ["word1", "word2"];
var temp = {};
var data = new Array();
for (var cnt = 0; cnt < values.length; cnt++) {
  for (var i = 0; i < header.length; i++) {
    temp[header[i]] = values[i];
  }
  data.push(temp);
}
for (obj in data) {
  Badwords.insert(data[obj]);
}

And then the hasOwnProperty gives the desired results 然后hasOwnProperty提供所需的结果

Badwords.findOne().hasOwnProperty("name");
true

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