Embeer.js EmberObject toString()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。

toString() 方法用於獲取對象的字符串表示形式。

用法:

toString()

Parameters: 它不需要任何參數。

Returns: 對象的字符串版本。

安裝和運行 Ember.js 的步驟：

步驟 1：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

第 2 步：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 details

應用程序/路線/details.js

Javascript


import Route from '@ember/routing/route'; 
import EmberObject from '@ember/object'; 
  
const Person = EmberObject.extend({ 
    toStringExtension() { 
        return this.get('name'); 
    } 
}); 
  
export default class DetailsRoute extends Route { 
    person; 
    createPerson() { 
        let person = Person.create({ 
            name: 'Anubhav', 
            mobile: '1298119967', 
            age: 20, 
            salary: 10000, 
            city: 'Patna', 
            country: 'India', 
            gender: 'M', 
            zipCode: '800020', 
        }); 
        return person; 
    } 
    changeDetails(person) { 
        person.setProperties({ 
            age: 51, 
            country: 'England', 
        }); 
    } 
    model() { 
        this.person = this.createPerson(); 
        this.changeDetails(this.person); 
        return this.person; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('person', this.person); 
    } 
}

應用程序/控製器/details.js

Javascript


import Ember from 'ember'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        clickButton() { 
            alert(this.person.toString()); 
        } 
    }, 
});

應用程序/模板/details.hbs

HTML


{{page-title "Details"}} 
<h1>Person</h1> 
<div>Name: {{this.person.name}}</div> 
<div>Age: {{this.person.age}}</div> 
<div>Salary: {{this.person.salary}}</div> 
<div>Gender: {{this.person.gender}}</div> 
<div>Zip Code: {{this.person.zipCode}}</div> 
<div>Country: {{this.person.country}}</div> 
<div>Mobile: {{this.person.mobile}}</div> 
<br/><br/> 
<input type="button" id="click" 
    value="Click Here!" {{action 'clickButton'}}/> 
{{outlet}}

輸出：

示例 2：鍵入以下代碼以生成本示例的路由：

ember generate route students

應用程序/路線/students.js

Javascript


import Route from '@ember/routing/route'; 
import EmberObject from '@ember/object'; 
  
const Student = EmberObject.extend({ 
    toStringExtension() { 
        return `${this.get('name')} got ${this.get('marks')} marks`; 
    } 
}); 
  
export default class StudentsRoute extends Route { 
    student; 
    createStudent() { 
        let student = Student.create({ 
            name: 'Alix Mainston', 
            gender: 'F', 
            class: 9, 
            grade: 'B', 
            marks: 98, 
            pocket_money: 9643, 
        }); 
        return student; 
    } 
    model() { 
        this.student = this.createStudent(); 
        return this.student; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('student', this.student); 
    } 
}

應用程序/控製器/students.js

Javascript


import Ember from 'ember'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        clickButton() { 
            alert(this.student.toString()); 
        } 
    }, 
});

應用程序/模板/students.hbs

HTML


{{page-title "Students"}} 
<h1>Details:</h1> 
<div>Name: {{this.student.name}}</div> 
<div>Gender: {{this.student.gender}}</div> 
<div>Class: {{this.class}}</div> 
<div>Grade: {{this.student.grade}}</div> 
<div>Marks: {{this.student.marks}}</div> 
<div>Pocket Money: {{this.student.pocket_money}}</div> 
<br/><br/> 
<input type="button" id="click" 
    value="Click Here!" {{action 'clickButton'}}/> 
{{outlet}}

輸出：

參考：https://api.emberjs.com/ember/4.8/classes/EmberObject/methods

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注：本文由純淨天空篩選整理自aayushmohansinha大神的英文原創作品 Ember.js EmberObject toString() 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。