获取属性值从数组使用jQuery对象数组 [英] Get array of property values from array of objects with jquery

问题描述

我想从这里得到：

 例如= {[
  名称：someone1
  城市：somewhere1
  状态：someplace1
}，{
  名称：someone2
  城市：somewhere2
  状态：someplace2
}]
 

在这里：

  example.name = [someone1，someone2]
 

在短短一个code越好。很显然，我可以只循环，并建立数组，但我需要这个做各种不同的物体了大量的时间。我可以写一个函数来做到这一点，但是这将是很难使一般功能足够我的应用程序。

有jQuery的这个快捷方式？

解决方案

您可以通过对象键循环，并使用名称 >推：

\r

\r

例如= {[\r
  名称：someone1\r
  城市：somewhere1\r
  状态：someplace1\r
}，{\r
  名称：someone2\r
  城市：somewhere2\r
  状态：someplace2\r
}];\r
变种arrNames = [];\r
//通过对象键循环\r
Object.keys（例如）.forEach（功能（键）{\r
  //获取名称的值\r
  VAR VAL =例如[关键] [名称];\r
  //推名称字符串数组中\r
  arrNames.push（VAL）;\r
}）;\r
的console.log（arrNames）; //输出[someone1，someone2]

\r

\r

\r

在@Felix建议（与我同意）有没有必要使用 Object.keys ：

\r

\r

例如= {[\r
  名称：someone1\r
  城市：somewhere1\r
  状态：someplace1\r
}，{\r
  名称：someone2\r
  城市：somewhere2\r
  状态：someplace2\r
}];\r
变种arrNames = [];\r
//通过对象键循环\r
example.forEach（函数（项目）{\r
  //获取名称的值\r
  VAR VAL = item.name\r
  //推名称字符串数组中\r
  arrNames.push（VAL）;\r
}）;\r
的console.log（arrNames）; //输出[someone1，someone2]

\r

\r

\r

参考

Object.keys（）

<一个href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach\"相对=nofollow> Array.prototype.forEach（）

Array.prototype.push（）

I am trying to get from here:

example = [{
  name: "someone1",
  city: "somewhere1",
  state: "someplace1"
},{
  name: "someone2",
  city: "somewhere2",
  state: "someplace2"
}]

to here:

example.name = [ "someone1", "someone2" ]

In as little a code as possible. Obviously I could just loop it and build the array but I need to do this a large number of times on a variety of objects. I could write a function to do it but it would be difficult to make the function general enough for my application.

Is there a shortcut for this in jQuery?

解决方案

You can iterate through the object keys and save the name in the array using push:

example = [{
  name: "someone1",
  city: "somewhere1",
  state: "someplace1"
}, {
  name: "someone2",
  city: "somewhere2",
  state: "someplace2"
}];
var arrNames = [];
//iterate through object keys
Object.keys(example).forEach(function(key) {
  //get the value of name
  var val = example[key]["name"];
  //push the name string in the array
  arrNames.push(val);
});
console.log(arrNames);//prints ["someone1", "someone2"]

After @Felix suggestion(with which I agree) there is no need to use Object.keys:

example = [{
  name: "someone1",
  city: "somewhere1",
  state: "someplace1"
}, {
  name: "someone2",
  city: "somewhere2",
  state: "someplace2"
}];
var arrNames = [];
//iterate through object keys
example.forEach(function(item) {
  //get the value of name
  var val = item.name
  //push the name string in the array
  arrNames.push(val);
});
console.log(arrNames); //prints ["someone1", "someone2"]

References

Object.keys()

Array.prototype.forEach()

Array.prototype.push()

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