打字稿數組未定義

Question

我應該保存多個JSON對象到類型的數組「聯繫」

getContacts(){ 
    let self = this; 
    $.ajax({ 
     type: "GET", 
     url: "/chat/contacts/", 
     dataType:"json", 
     success: function(response){ 
      let obj = response; 
      let i = 1; 
      let contacts: Contact[] = []; 
      for (let key in obj) { 
       if (obj.hasOwnProperty(key)) { 
        let val = obj[key]; 
        contacts[i].id = val["id"]; //<-- contacts[i] is undefinded 
        contacts[i].partner = val["partnerId"]; 
        contacts[i].name = val["name"]; 
        contacts[i].type = val["type"]; 
        console.log(contacts[i]); 
       } 
      } 
     }, 
     error: function(jqXHR, textStatus, errorThrown){ 
      alert(errorThrown); 
     } 
    }); 
} 

在標記點，它說

接觸[i]是一個函數undefinded

我該如何初始化數組使其工作？

這裏是聯繫類：

class Contact extends BaseModel{ 
    static CCO_ID = "id"; 
    static CCO_PARTNER = "partner"; 
    static CCO_NAME = "name"; 
    static CCO_TYPE = "type"; 


    partner: Number; 
    name: String; 
    type: Number; 
} 

Answer 1

您需要先定義contacts[i]是一個對象，然後使用它的屬性。

還有一件事，你從索引1開始，在Javascript數組的索引從0開始。請注意，如果這不是故意的。

let val = obj[key]; 
contacts[i] = new Contact(); // <-- Look here 
contacts[i].id = val["id"]; 
contacts[i].partner = val["partnerId"]; 
contacts[i].name = val["name"]; 
contacts[i].type = val["type"]; 
console.log(contacts[i]);