以数组角度4添加项目

Question

我有以下代码

export class FormComponent implements OnInit {
  name: string;
  empoloyeeID : number;
  empList: Array<{name: string, empoloyeeID: number}> = []; 
  constructor() {
  }

ngOnInit() {
  }

onEmpCreate(){
   console.log(this.name,this.empoloyeeID);
   this.empList.push.apply(this.name,this.empoloyeeID);
   this.name ="";
   this.empoloyeeID = 0;
   }
}

但这个投掷错误

CreateListFromArrayLike在非对象上调用

还有什么方法可以创建自定义类和使用的对象列表,而不是在这里定义数组.

谢谢

Answer 1

是的,有办法做到这一点.

首先声明一个类.

//anyfile.ts
export class Custom
{
  name: string, 
  empoloyeeID: number
}

然后在您的组件中导入该类

import {Custom} from '../path/to/anyfile.ts'
.....
export class FormComponent implements OnInit {
 name: string;
 empoloyeeID : number;
 empList: Array<Custom> = [];
 constructor() {

 }

 ngOnInit() {
 }
 onEmpCreate(){
   //console.log(this.name,this.empoloyeeID);
   let customObj = new Custom();
   customObj.name = "something";
   customObj.employeeId = 12; 
   this.empList.push(customObj);
   this.name ="";
   this.empoloyeeID = 0; 
 }
}

另一种方法是接口读取文档一次 - https://www.typescriptlang.org/docs/handbook/interfaces.html

结帐这个问题,非常有趣 - 何时在TypeScript/Angular2中使用Interface和Model

Answer 2

您empList是对象类型，但您正在尝试推送字符串

尝试这个

this.empList.push({this.name,this.empoloyeeID});

Answer 3

将对象推入您的数组。尝试这个：

export class FormComponent implements OnInit {
    name: string;
    empoloyeeID : number;
    empList: Array<{name: string, empoloyeeID: number}> = []; 
    constructor() {}
    ngOnInit() {}
    onEmpCreate(){
        console.log(this.name,this.empoloyeeID);
        this.empList.push({ name: this.name, empoloyeeID: this.empoloyeeID });
        this.name = "";
        this.empoloyeeID = 0;
    }
}