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Embeer.js MutableArray addObjects()用法及代码示例


Ember.js 是一个开源 JavaScript 框架，用于开发基于 Model-View-Controller (MVC) 架构的大型客户端 Web 应用程序。 Ember.js是使用最广泛的前端应用框架之一。它的目的是加速开发并提高生产力。目前，它被大量网站使用，包括 Square、Discourse、Groupon、Linked In、Live Nation、Twitch 和 Chipotle。

addObject() 方法用于将每个对象添加到数组中。

用法:

addObjects( objects );

属性：

  • objects:它是要添加到数组中的对象。

返回值：它返回EmberArray接收器。

安装和运行 Ember.js 的步骤：

第 1 步：要运行以下示例，您需要有一个 ember 项目。要创建一个，您需要先安装ember-cli。在终端中写入以下代码：

npm install ember-cli

现在您可以通过输入以下代码来创建项目：

ember new <project-name> --lang en

步骤 2：要启动服务器，请键入：

ember serve

示例 1：键入以下代码以生成本示例的路由：

ember generate route addObjects

应用程序/路线/add-objects.js


import Route from '@ember/routing/route'; 
  
export default class WebsitesRoute extends Route { 
    websites = [ 
        { 
            'name': 'Wikipedia', 
            'link': 'www.wikipedia.com'
        }, 
        { 
            'name': 'Facebook', 
            'link': 'www.facebook.com'
        }, 
        { 
            'name': 'Google', 
            'link': 'www.google.com'
        }, 
        { 
            'name': 'Twitter', 
            'link': 'www.twitter.com'
        } 
    ]; 
    moreWebsites = [ 
        { 
            'name': 'Instagram', 
            'link': 'www.instagram.com'
        }, 
        { 
            'name': 'Amazon', 
            'link': 'www.amazon.com'
        } 
    ] 
    model() { 
        return this.websites; 
    } 
    setupController(controller, model) { 
        this._super(controller, model); 
        controller.set('websites', this.websites); 
        controller.set('moreWebsites', this.moreWebsites); 
    } 
}

应用程序/控制器/add-objects.js


import Ember from 'ember'; 
import { pushObjects, setEach } from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        add() { 
            this.websites.addObjects(this.moreWebsites); 
        } 
    }, 
});

应用程序/模板/add-objects.hbs


{{page-title "Websites"}} 
<h3>Websites</h3> 
<br /><br /> 
<table> 
    <tr> 
        <th>Name</th> 
        <th>Website Link</th> 
      </tr> 
      {{#each @model as |website|}} 
    <tr> 
          <td>{{website.name}}</td> 
          <td>{{website.link}}</td> 
    </tr> 
      {{/each}} 
</table> 
<br /><br /> 
<input type="button" id="add-website" 
    value="More Websites" {{action "add"}} /> 
{{outlet}}

输出：访问 localhost:4200/addObjects 查看输出

Ember.js MutableArray addObjects

示例 2：键入以下代码以生成本示例的路由：

ember generate route addObjects1

应用程序/路线/add-objects1.js


import Route from '@ember/routing/route'; 
  
export default class DetailsRoute extends Route { 
    details = [ 
        { 
            name: 'Aaksh', 
            mobile: '9811129967', 
            city: 'Delhi', 
            country: 'India', 
            gender: 'M', 
            zipCode: '800020', 
        }, 
        { 
            name: 'Sweta', 
            mobile: '9456712890', 
            city: 'Mumbai', 
            country: 'India', 
            gender: 'F', 
            zipCode: '400001', 
        }, 
        { 
            name: 'Satyam', 
            mobile: '2222222222', 
            city: 'Raipur', 
            country: 'India', 
            gender: 'M', 
            zipCode: '110012', 
        }, 
        { 
            name: 'Shandya', 
            mobile: '1122113322', 
            city: 'Bangalore', 
            country: 'India', 
            gender: 'F', 
            zipCode: '530068', 
        }, 
        { 
            name: 'Ayushi', 
            mobile: '2244668800', 
            city: 'Thana', 
            country: 'India', 
            gender: 'F', 
            zipCode: '302001', 
        }, 
    ]; 
    someMoreDetails = [ 
        { 
            name: 'Yogesh', 
            mobile: '1133557799', 
            city: 'Chennai', 
            country: 'India', 
            gender: 'F', 
            zipCode: '600001', 
        }, 
        { 
            name: 'Sunny', 
            mobile: '9911000000', 
            city: 'Masore', 
            country: 'India', 
            gender: 'M', 
            zipCode: '574142', 
        }, 
        { 
            name: 'Khushi', 
            mobile: '8888888888', 
            city: 'Pune', 
            country: 'India', 
            gender: 'F', 
            zipCode: '111045', 
        }, 
    ]; 
    city; 
    code; 
    model() { 
        return this.details; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('details', this.details); 
        controller.set('someMoreDetails', this.someMoreDetails); 
        controller.set('city', this.city); 
        controller.set('code', this.code); 
    } 
}

应用程序/控制器/add-objects1.js


import Ember from 'ember'; 
import { addObjects, shiftObject, setEach } from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        checkCity(city) { 
            alert(`Contains Person from ${city}: 
            ${this.details.isAny('city', city) ? 
                    'Yes' : 'No'}`); 
        }, 
        remove() { 
            this.details.shiftObject(); 
        }, 
        pushMoreDetails() { 
            this.details.addObjects(this.someMoreDetails); 
        }, 
    }, 
});

应用程序/模板/add-objects1.hbs


{{page-title "Details"}} 
<h3>List of People: </h3> 
<br /><br /> 
<table> 
    <tr> 
        <th>Name</th> 
        <th>Gender</th> 
        <th>Mobile</th> 
        <th>City</th> 
        <th>Country</th> 
        <th>Zip Code</th> 
      </tr> 
      {{#each @model as |detail|}} 
    <tr> 
          <td>{{detail.name}}</td> 
          <td>{{detail.gender}}</td> 
          <td>{{detail.mobile}}</td> 
          <td>{{detail.city}}</td> 
          <td>{{detail.country}}</td> 
          <td>{{detail.zipCode}}</td> 
    </tr> 
      {{/each}} 
</table> 
<br /><br /> 
<div> 
    <label>Enter City: </label> 
      {{input value=this.city}} 
</div> 
<div> 
    <input 
           type="button"
            id="check-city"
        value="Check City"
        {{action "checkCity" this.city}} 
      /> 
</div> 
<br /> 
<input type="button" id="remove-detail" 
    value="Remove" {{action "remove"}} /> 
<br /><br /> 
<input 
    type="button"
      id="push-details"
      value="Add More Details"
      {{action "pushMoreDetails"}} 
/> 
{{outlet}}

输出：访问 localhost:4200/addObjects1 查看输出

Ember.js MutableArray addObjects

参考：https://api.emberjs.com/ember/4.4/classes/MutableArray/methods/addObjects?anchor=addObjects



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注：本文由纯净天空筛选整理自satyam00so大神的英文原创作品 Ember.js MutableArray addObjects() Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。