javascript - angularjs验证重复项并设置更大的重复项

Question

我有这段代码，我正在检查重复项，如果重复，它有 isDuplicate bool 值，但我想扩展我的代码并比较另一个属性，即 colorId 并设置 isBigger 属性，以获取较大的属性:)您有什么建议吗？非常感谢您

这是我的代码:

$scope.verifyDuplicate = function() {
  var names = [{
    "order": 1,
    "name": "a",
    "shortName": "a",
    "isDuplicate": false,
    "categoryId": 15070,
    "colorId": 50
  }, {
    "order": 2,
    "name": "s",
    "shortName": "s",
    "categoryId": 15071,
    "colorId": 51
  }, {
    "order": 3,
    "name": "h",
    "shortName": "g",
    "focused": 1513262627570,
    "isDuplicate": true,
    "categoryId": 15074,
    "colorId": 54
  }, {
    "order": 4,
    "name": "h",
    "shortName": "h",
    "isDuplicate": true,
    "categoryId": 15075,
    "colorId": 59
  }];
  var sorted, i;

  sorted = names.concat().sort(function(a, b) {
    if (a.name > b.name)
      return 1;
    if (a.name < b.name)
      return -1;
    return 0;
  });
  for (i = 0; i < names.length; i++) {
    if (sorted[i].name !== '') {
      sorted[i].isDuplicate = ((sorted[i - 1] && sorted[i - 1].name === sorted[i].name)) || ((sorted[i + 1] && sorted[i + 1].name === sorted[i].name));
    }
  }
};

Answer 1

您可以引入一个通用函数，使用以下函数根据任何键对对象数组进行排序 -

$scope.sortByKey = function(array, key) {
    return array.sort(function(a, b) {
        var x = a[key]; var y = b[key];
        return ((x > y) ? -1 : ((x < y) ? 1 : 0));
    });
};

使用此函数，您可以根据任意键对对象数组进行排序，并将属性“isLargest”设置为 true。您可以检查下面的代码片段。

$scope.verifyDuplicate = function() {
  var names = [{
    "order": 1,
    "name": "a",
    "shortName": "a",
    "isDuplicate": false,
    "categoryId": 15070,
    "colorId": 50
  }, {
    "order": 2,
    "name": "s",
    "shortName": "s",
    "categoryId": 15071,
    "colorId": 51
  }, {
    "order": 3,
    "name": "h",
    "shortName": "g",
    "focused": 1513262627570,
    "isDuplicate": true,
    "categoryId": 15074,
    "colorId": 54
  }, {
    "order": 4,
    "name": "h",
    "shortName": "h",
    "isDuplicate": true,
    "categoryId": 15075,
    "colorId": 59
  }];
  
  var sorted;
  sorted = $scope.sortByKey(names , "colorId");
  
  //To check if the multiple object has largest value
   for(var i = 0; i< sorted.length;i++){
     if(sorted[i] === sorted[0]) sorted[i]["isLargestColorId"] = true;
     else break;
   }
  
};