比较 Angular 中的对象 [英] Compare objects in Angular

问题描述

是否可以对 Angular 中的两个对象进行深度"比较?我想做的是比较每个键/值对.例如:

Is it possible to do a "deep" comparison of two object in Angular? What I would like to do is compare each key/value pair. For example:

对象 1

{
   key1: "value1",
   key2: "value2",
   key3: "value3"
}

对象 2

{
   key1: "value1",
   key2: "newvalue",
   key3: "value3" 
}

我需要的是比较失败，因为只有一个键/值对是不同的.换句话说，所有的键/值对必须完全匹配，否则失败.这是 Angular 中已经内置的东西吗?如果我真的需要，我确信我可以编写自己的服务，但我希望它已经内置.类似于 angular.equals.

What I need is for the comparison to fail since only one of the key/value pairs is diffent. In other words ALL of the key/value pairs must match exactly or else failure. Is this something already built into Angular. I'm sure I could write my own service if I really needed to, but I was hoping it was already built in. Similar to angular.equals.

推荐答案

要比较两个对象，您可以使用:

To compare two objects you can use:

angular.equals(obj1, obj2)

进行深度比较，不依赖于键的顺序参见 AngularJS DOCS 和一点 演示

It does a deep comparison and does not depend on the order of the keys See AngularJS DOCS and a little Demo

var obj1 = {
  key1: "value1",
  key2: "value2",
  key3: {a: "aa", b: "bb"}
}

var obj2 = {
  key2: "value2",
  key1: "value1",
  key3: {a: "aa", b: "bb"}
}

angular.equals(obj1, obj2) //<--- would return true

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