在JS的数组中，建议使用唯一属性过滤对象的方法是什么? [英] What is the recommended way to filter Objects with Unique property in the array in JS?

问题描述

如何根据唯一属性过滤数组中的对象 在这里，我有一个数组，其中KEY是对象中的键值. 如何过滤键值唯一的对象.在对象中重复键值，但只应滤除第一个键值.

How to filter objects in array based on unique property here i have an array where KEY is the key value in the objects. How to filter the objects where key value is unique. Key value is repeated in the objects but should only the first one should be filtered out.

var array = [];
array = [
  {
    "KEY": "00001",
    "ID": "1234",
    "ID_DESC": "1234",
    "NOT_UNIQUE_VALUE": "119.0",
    "NOT_UNIQUE_TYPE": "this is not unique"
  }, 
  {
    "KEY":"00001",
    "ID":"1234",
    "ID_DESC":"1234",
    "NOT_UNIQUE_VALUE":"11019.0",
    "NOT_UNIQUE_TYPE":"not unique type"
  },
  {
    "KEY":"00002",
    "ID":"2468",
    "ID_DESC":"2468",
    "NOT_UNIQUE_VALUE":"195.0",
    "NOT_UNIQUE_TYPE":"not unique type",
  },
  {
    "KEY":"00002",
    "ID":"2468",
    "ID_DESC":"2468",
    "NOT_UNIQUE_VALUE":"195.0",
    "NOT_UNIQUE_TYPE":"not unique type",
  }]

结果:

uniquearray = [
  {
    "KEY":"00001",
    "ID":"1234",
    "ID_DESC":"1234",
    "NOT_UNIQUE_VALUE":"119.0",
    "NO T_UNIQUE_TYPE":"this is not unique"
  },
  {
    "KEY":"00002",
    "ID":"2468",
    "ID_DESC":"2468",
    "NOT_UNIQUE_VALUE":"195.0",
    "NOT_UNIQUE_TYPE":"not unique type"
  }]

推荐答案

var uniqueArray = []
for (var i = 0; i < array.length; i++) {
    var uniquevalue = array[i];
    unique[array.KEY] = uniquevalue;
}
for (var name in unique) {
    var uniqueObject = unique[name];
    uniqueArray.push(uniqueObject);
}

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