從另一個JSON對象數組創建一個JSON對象數組

Question

我有一個像這樣的JSON數組：

[{Company:"", FirstName:"John", SecondName:"Smith", ID:"2345"},
{Company:"SomeComp", FirstName:"", SecondName:"Kane", ID:"4363"},
{Company:"Random", FirstName:"Tom", SecondName:"", ID:"6454"}]

我想對此進行解析，並創建一個新的對象數組，這些對象僅具有不帶ID的非空白屬性，即：

[{FirstName:"John", SecondName:"Smith"},
{Company:"SomeComp", SecondName:"Kane"},
{Company:"Random", FirstName:"Tom"}]

用Javascript做到這一點的最佳方法是什么？

Answer 1

您可以使用地圖

map（）方法創建一個新數組，並對該數組中的每個元素調用提供的函數。

 var companies = [{Company:"", FirstName:"John", SecondName:"Smith", ID:"2345"}, {Company:"SomeComp", FirstName:"", SecondName:"Kane", ID:"4363"}, {Company:"Random", FirstName:"Tom", SecondName:"", ID:"6454"}]; // This returns a new array var newArray = companies.map(function(item) { var obj = {}; for(var prop in item) { if (item[prop] !== "" && prop !== "id" ) { obj[prop] = item[prop]; }; } return obj; }); console.log(newArray); 

Answer 2

這應該做

var input = JSON.parse("<YOUR JSON HERE>");
var output = [];
input.forEach(function(item) {
     delete item.ID;
     for (var prop in item) {
         if (item.hasOwnProperty(prop) && item[prop] === "") {
              item[prop] = undefined;
         }             
     }
output.push(item);
});