Embeer.js EmberArray every()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。

every() 方法用于检查列表中每个对象上传递的函数。

用法:

every(callback, target)

参数：

callback: 在每个对象上执行的函数。
target: 应用回调的目标对象。

返回值：如果回调对数组中的所有对象返回 true，则为 True，否则为 false。

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

第 2 步：现在您可以通过输入以下代码来创建项目：

ember new <project-name> --lang en

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 every1

应用程序/路线/every1.js


import Route from '@ember/routing/route'; 
import { } from '@ember/array'; 
  
export default class FruitsRoute extends Route { 
    item1 = [ 
        { 
            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', 
        }, 
    ]; 
    item2 = [ 
        { 
            name: 'Lady Finger', 
            isFruit: false, 
            color: 'green', 
        }, 
        { 
            name: 'Brinjal', 
            isFruit: false, 
            color: 'purple', 
        }, 
        { 
            name: 'Grapes', 
            isFruit: true, 
            color: 'green', 
        }, 
        { 
            name: 'Mango', 
            isFruit: true, 
            color: 'yellow', 
        }, 
        { 
            name: 'Potato', 
            isFruit: false, 
            color: 'brown', 
        }, 
        { 
            name: 'Onion', 
            isFruit: false, 
            color: 'violet', 
        }, 
    ]; 
    model() { 
        return this.item1; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('item1', this.item1); 
        controller.set('item2', this.item2); 
    } 
}

应用程序/控制器/every1.js


import Ember from 'ember'; 
import { Every } from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        removeFruit() { 
            this.fruits.shiftObject(); 
        }, 
        Check_item1() { 
            this.item1.every((i) => i.isFruit) 
                ? alert('List1 only  
                   contains Fruit only') 
                : alert('List1 also  
                   contains other items'); 
        }, 
        Check_item2() { 
            this.item2.every((i) => i.isFruit 
                  == false) 
                ? alert('Yes it only  
                   contains Vegetables ') 
                : alert('No it 
                   contains fruits also '); 
        }, 
    }, 
});

应用程序/模板/every1.hbs


{{page-title "Fruits"}} 
<table 
    style="float : left ;  
  border-spacing : 30px"
> 
    <h3>Here is a list 1: </h3> 
    <ul> 
        {{#each @model as |eatable|}} 
            <li>{{eatable.name}}</li> 
        {{/each}} 
    </ul> 
</table> 
<table style="border-spacing : 30px"> 
    <h3>Here is a list 2: </h3> 
    <ul> 
        {{#each this.item2 as |eatable|}} 
            <li>{{eatable.name}}</li> 
        {{/each}} 
    </ul> 
</table> 
<br /><br /> 
<input 
    type="button"
    id="fruit-all"
    value="List 1 Contains Only Fruit?"
    {{action "Check_item1"}} 
/> 
<br /><br /> 
<input 
    type="button"
    id="fruit-notAll"
    value="List 2 Contains Only Vegetables?"
    {{action "Check_item2"}} 
/> 
{{outlet}}

输出：访问 localhost:4200/every1 查看输出

Ember.js EmberArray 每个方法

示例 2：键入以下代码以生成本示例的路由：

ember generate route every2

应用程序/路线/every2.js


import Route from '@ember/routing/route'; 
  
export default class DetailsRoute extends Route { 
    details = [ 
        { 
            name: 'Anubhav', 
            mobile: '1298119967', 
            city: 'Patna', 
            country: 'India', 
            gender: 'M', 
            zipCode: '800020', 
        }, 
        { 
            name: 'Sakshi', 
            mobile: '1234567890', 
            city: 'Mumbai', 
            country: 'India', 
            gender: 'F', 
            zipCode: '400001', 
        }, 
        { 
            name: 'Satyam', 
            mobile: '2222222222', 
            city: 'Delhi', 
            country: 'India', 
            gender: 'M', 
            zipCode: '110012', 
        }, 
        { 
            name: 'Shivam', 
            mobile: '1122113322', 
            city: 'Bangalore', 
            country: 'India', 
            gender: 'M', 
            zipCode: '530068', 
        }, 
        { 
            name: 'Ayushi', 
            mobile: '2244668800', 
            city: 'Jaipur', 
            country: 'India', 
            gender: 'F', 
            zipCode: '302001', 
        }, 
    ]; 
    city; 
    code; 
    model() { 
        return this.details; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('details', this.details); 
        controller.set('city', this.city); 
        controller.set('code', this.code); 
    } 
}

应用程序/控制器/every2.js


import Ember from 'ember'; 
import { every } from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        checkCity(code) { 
            alert( 
                `Contains Person from Outside ${code}:  
                  ${this.details.every((i) => 
                    i.city == code) 
                    ? 'No' : 'Yes'
                }` 
            ); 
        }, 
        checkCountry() { 
            alert( 
                `All are ${this.details.every((i) => 
                    i.country == 'India') 
                    ? '' : 'not'
                } Indian` 
            ); 
        }, 
        CheckFemale() { 
            alert( 
                `All are ${this.details.every((i) => 
                    i.gender == 'F') 
                    ? '' : 'not'
                } Females` 
            ); 
        }, 
    }, 
});

应用程序/模板/every2.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.code}} 
</div> 
<div> 
    <input 
        type="button"
        id="check-city"
        value="Check Person from outside City"
        {{action "checkCity" this.code}} 
    /> 
</div> 
<br /><br /> 
<div> 
    <input 
        type="button"
        id="set-code"
        value="All Females"
        {{action "CheckFemale"}} 
    /> 
</div> 
<br /><br /> 
<input 
    type="button"
    id="check-country"
    value="All Indian?"
    {{action "checkCountry"}} 
/> 
{{outlet}}

输出：访问 localhost:4200/every2 查看输出

Ember.js EmberArray 每个方法

参考：https://api.emberjs.com/ember/4.4/classes/EmberArray/methods/every?anchor=every

相关用法

注：本文由纯净天空筛选整理自jeemains0neet大神的英文原创作品 Ember.js EmberArray every() 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。