比较对象数组并更新Angular中的键 [英] Compare to arrays of objects and update key in Angular

问题描述

如果两个数组中都存在一个对象，如何比较两个对象数组并更新密钥?

How can I compare two arrays of objects and update a key if an object exists in both arrays?

$scope.listOne = [
  {id: 1, selected: false},
  {id: 2, selected: false},
  {id: 3, selected: false}
];

$scope.listTwo = [
  {id: 4, color: orange},
  {id: 5, color: blue},
  {id: 2, color: green}
];

使用上述对象，我如何比较它们并将listOne [1] .selected更新为true?

Using the above objects, how can I compare them and have listOne[1].selected updated to true?

推荐答案

在这里，我试图遍历listone并检查listtwo中是否存在这样的键，如果这样的话，则将listone的selected属性设置为true

Here, i am trying to loop through listone and checking if there is such key in listtwo if so making listone's selected property to true

这是在vanila javascript中完成的

This is done in vanila javascript

var listOne = [{
  id: 1,
  selected: false
}, {
  id: 2,
  selected: false
}, {
  id: 3,
  selected: false
}];

var listTwo = [{
  id: 4,
  color: "orange"
}, {
  id: 5,
  color: "blue"
}, {
  id: 2,
  color: "green"
}];



angular.forEach(listOne, function(value) {
  for (var key in listTwo) {
    if (listTwo[key]["id"] == value.id) {
      value.selected = true;
    }
  }
});
console.log(listOne);

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

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