Embeer.js ArrayProxy every()用法及代碼示例

Ember.js 是一個開源 JavaScript 框架，用於開發基於 Model-View-Controller (MVC) 架構的大型客戶端 Web 應用程序。 Ember.js是使用最廣泛的前端應用框架之一。它的目的是加速開發並提高生產力。目前，它被大量網站使用，包括 Square、Discourse、Groupon、Linked In、Live Nation、Twitch 和 Chipotle。

every() 方法用於根據函數檢查數組的所有項目。

用法:

every( callback, target );

參數：

callback: 它是針對數組的每個項目進行測試的回調函數。
target: 這是針對回調函數進行測試的項目。

返回值：如果所有項目都通過該函數，則返回 true，否則返回 false。

安裝和運行 Ember.js 的步驟：

要運行以下示例，您需要有一個 ember 項目。要創建一個，您需要先安裝ember-cli。在終端中寫入以下代碼：

npm install ember-cli

現在您可以通過輸入以下代碼來創建項目：

ember new <project-name> --lang en

要啟動服務器，請鍵入：

ember serve

示例 1：鍵入以下代碼以生成本示例的路由：

ember generate route every1

應用程序/路線/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: 'Potato', 
            isFruit: false, 
            color: 'brown', 
        }, 
        { 
            name: 'Onion', 
            isFruit: false, 
            color: 'violer', 
        }, 
    ]; 
    model() { 
        return this.item1; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('item1', this.item1); 
        controller.set('item2', this.item2); 
    } 
}

應用程序/控製器/every1.js


import Ember from 'ember'; 
import { every, addObjects } from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        All_fruit() { 
            let foo = this.item1.every((item) => 
              item.isFruit == true); 
            alert(foo ? 'Yes all items are Fruit'
             : 'No All items not Fruit'); 
        }, 
        Any_Vegy() { 
            let foo = this.item1.every((item) =>  
            item.isFruit == false); 
            alert(foo ? 'Yes all items are vegetable' 
            : 'No All items Not Vegetable'); 
        }, 
        AddItems() { 
            this.item1.addObjects(this.item2); 
        } 
  
    }, 
});

應用程序/模板/every1.hbs


{{page-title "Fruits"}} 
<table style=" border-spacing : 30px"> 
    <h3>Here is a list 1: </h3> 
    <ul> 
        {{#each @model as |eatable|}} 
            <li>{{eatable.name}}</li> 
        {{/each}} 
    </ul> 
</table> 
<input 
    type="button"
    id="all-Fruit"
    value="All items are Fruit"
    {{action "All_fruit"}} 
/> 
  
<br /><br /> 
<input 
    type="button"
    id="any-vegy"
    value="All item are Vegetables"
    {{action "Any_Vegy"}} 
/> 
  
<br /><br /> 
<input type="button" id="add-items"
  value="Add Items" {{action "AddItems"}} /> 
  
{{outlet}}

輸出：訪問 localhost:4200/every1 查看輸出

Ember.js ArrayProxy 每個方法

示例 2：鍵入以下代碼以生成本示例的路由：

ember generate route every2

應用程序/路線/every2.js


import Route from '@ember/routing/route'; 
  
class student { 
    name = null; 
    gender = null; 
    clas = null; 
    grade = null; 
    constructor(name, gender, clas, grade) { 
        this.name = name; 
        this.gender = gender; 
        this.clas = clas; 
        this.grade = grade; 
    } 
} 
  
export default class StudentsRoute extends Route { 
    students = [ 
        new student('Aakash', 'M', 10, 'A'), 
        new student('Soniya', 'F', 8, 'C'), 
        new student('Esnoor', 'M', 9, 'C'), 
        new student('Isha', 'F', 11, 'B'), 
        new student('Doman', 'M', 12, 'B'), 
        new student('Lolu', 'M', 10, 'A'), 
        new student('Satyam', 'M', 10, 'A'), 
    ]; 
    temp2; 
    temp; 
    model() { 
        return this.students; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('students', this.students); 
        controller.set('temp', this.temp); 
        controller.set('temp1', this.temp1); 
        controller.set('temp2', this.temp2); 
    } 
}

應用程序/控製器/every2.js


import Ember from 'ember'; 
import { mapBy, every } from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        Every_Pass() { 
            let foo = this.students.every((person) => 
             person.grade != 'F') 
            alert(foo ? "Yes Everyone Pass" : 
             "No Everyone not Pass"); 
        }, 
        Every_Female() { 
            let ans = this.students.mapBy('gender'); 
            let temp = ans.filter((gen) =>  
             gen == 'F'); 
            alert(`Total girls in list is 
             ${temp.length} `) 
        }, 
        Every_male() { 
            let ans = this.students.mapBy('gender'); 
            let temp = ans.filter((gen) => 
             gen == 'M'); 
            alert(`Total girls in list is 
             ${temp.length} `) 
        }, 
    }, 
});

應用程序/模板/every2.hbs


{{page-title "Student"}} 
<h3>List of Students: </h3> 
<br /><br /> 
<table> 
    <tr> 
        <th>Name</th> 
        <th>Gender </th> 
        <th>Class </th> 
        <th>Grade </th> 
    </tr> 
    {{#each @model as |detail|}} 
        <tr> 
            <td>{{detail.name}}</td> 
            <td> {{detail.gender}}</td> 
            <td>{{detail.clas}}</td> 
            <td>{{detail.grade}}</td> 
        </tr> 
    {{/each}} 
</table> 
  
<br /> 
<br /> 
<div> 
    <input 
        type="button"
        id="check-pass"
        value="Is Every One Pass"
        {{action "Every_Pass"}} 
    /> 
</div> 
<br /> 
<div> 
    <input 
        type="button"
        id="check-female"
        value="Total Female Student"
        {{action "Every_Female"}} 
    /> 
</div> 
<br /> 
<div> 
    <input 
        type="button"
        id="check-male"
        value="Total Male Student"
        {{action "Every_male"}} 
    /> 
</div> 
{{outlet}}

輸出：訪問 localhost:4200/every2 查看輸出

Ember.js ArrayProxy 每個方法

參考：https://api.emberjs.com/ember/4.4/classes/ArrayProxy/methods/every?anchor=every

相關用法

注：本文由純淨天空篩選整理自jeemains0neet大神的英文原創作品 Ember.js ArrayProxy every() Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。