Ember.js ArrayProxy addObject() 方法

Ember.js是一个开源的JavaScript框架，用于开发基于模型-视图-控制器（MVC）架构的大型客户端Web应用程序。Ember.js是最广泛使用的前端应用程序框架之一。它旨在加快开发速度，提高生产力。目前，许多网站都在使用它，包括Square、Discourse、Groupon、LinkedIn、Live Nation、Twitch和Chipotle。

addObjects() 方法是将对象添加到列表中，如果列表中不存在该对象。

语法：

addObjects( obj );

参数：

obj： 这是我们想要插入到列表中的对象。

返回值： 它返回接收者。

安装和运行Ember.js的步骤：

步骤1： 要运行以下示例，您需要拥有一个ember项目。要创建一个项目，您首先需要安装ember-cli。在终端中编写以下代码：

npm install ember-cli

步骤2： 现在您可以通过键入以下代码片段来创建项目：

ember new <project-name> --lang en

启动服务器，请输入：

ember serve

示例1

输入以下代码以生成此示例的路线：

ember generate route addObject1

app/routes/addObject1.js

import Route from '@ember/routing/route'; 
  
export default class StudentsRoute 
    extends Route { 
     movies = [ "Inception", "Ex Machina", "Oxygen", "Infine" ]; 
    temp2; 
    temp; 
    model() { 
        return this.movies; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('movies', this.movies); 
        controller.set('temp', this.temp); 
        controller.set('temp2', this.temp2); 
    } 
}

app/controllers/addObject1.js

import Ember from 'ember'; 
import { addObject } from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        addMovie(movie) { 
            this.movies.addObject(movie); 
          }, 
    }, 
});

app/templates/addObject1.hbs

{{page-title "Movies" }} 
<h3>List of Movies: </h3> 
<br /><br /> 
  
<div> 
    <label>Enter Movie: </label> 
          {{input value=this.item}} 
</div> 
<div> 
    <input 
        type="button"
        id="add-movie"
        value="Add Movie "
        {{action "addMovie" this.item}} 
    /> 
</div> 
<br /><br/> 
<ul> 
    {{#each @model as |i|}} 
        <li>{{i}}</li> 
    {{/each}} 
</ul> 
{{ outlet }}

输出: 访问 localhost:4200/addObject1 查看输出

Ember.js ArrayProxy addObject() 方法

示例2

输入以下代码以生成此示例的路线：

ember generate route addObject2

app/routes/addObject2.js

import Route from '@ember/routing/route'; 
  
export default class FruitsRoute extends Route { 
    fruits = [ 
        { 
            'name': 'Lady Finger', 
            'isFruit': false, 
            'color': 'green'
        }, 
        { 
            'name': 'Brinjal', 
            'isFruit': false, 
            'color': 'purple'
        }, 
        { 
            'name': 'Apple', 
            'isFruit': true, 
            'color': 'red'
        }, 
        { 
            'name': 'Grapes', 
            'isFruit': true, 
            'color': 'green'
        }, 
        { 
            'name': 'Mango', 
            'isFruit': true, 
            'color': 'yellow'
        }, 
        { 
            'name': 'Watermelon', 
            'isFruit': true, 
            'color': 'red'
        }, 
        { 
            'name': 'Orange', 
            'isFruit': true, 
            'color': 'orange'
        } 
    ]; 
    item1; 
    item2; 
    item3; 
    model() { 
        return this.fruits; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('fruits', this.fruits); 
        controller.set('item1', this.item1); 
        controller.set('item2', this.item2); 
        controller.set('item3', this.item3); 
    } 
}

app/controllers/addObject2.js

import Ember from "ember"; 
import { addObject, isAny, isEvery } from "@ember/array"; 
  
export default Ember.Controller.extend({ 
    actions: { 
        addFruit(item, item2, item3) { 
            let temp = { 
                name: item, 
                isFruit: item2, 
                color: item3, 
            } 
            this.fruits.addObject(temp); 
        }, 
    }, 
});

app/templates/addObject2.hbs

{{page-title "Fruits"}} 
<h3>Here is a list of eatables: </h3> 
<table> 
    <tr> 
        <th>Name</th> 
        <th>Fruit</th> 
        <th>Color</th> 
      </tr> 
      {{#each @model as |detail|}} 
    <tr> 
          <td>{{detail.name}}</td> 
          <td>{{detail.isFruit}}</td> 
          <td>{{detail.color}}</td> 
    </tr> 
      {{/each}} 
</table> 
<br /><br /> 
<h3>Enter Item Details: </h3> 
<div> 
    <label>Name: </label> 
      {{input value=this.item1}} 
</div> 
<br /> 
<div> 
    <label>Fruit: </label> 
      {{input value=this.item2}} 
</div> 
<br /> 
<div> 
    <label>Color: </label> 
      {{input value=this.item3}} 
</div> 
<br /> 
<div> 
    <input 
        type="button"
        id="addFruit"
        value="Add Fruit"
        {{action "addFruit" this.item1 this.item2 this.item3}} 
      /> 
</div> 
{{outlet}}

输出: 访问 localhost:4200/addObject2 查看输出结果

Ember.js ArrayProxy addObject() 方法