Ember.js EmberObject toString()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并提高生产率。目前，它被许多网站使用，包括Square、Discourse、Groupon、LinkedIn、Live Nation、Twitch和Chipotle。

toString() 方法用于获取对象的字符串表示。

语法:

toString()

参数： 它不需要任何参数。

返回值： 对象的字符串版本。

安装和运行Ember.js的步骤：

步骤1： 要运行以下示例，您需要先拥有一个Ember项目。要创建一个项目，您需要首先安装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

要启动服务器，请键入：

ember serve

示例1： 输入以下代码以生成此示例的路由：

ember generate route details

app/routes/details.js

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); 
    } 
}

app/controllers/details.js

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

app/template/details.hbs

{{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}}

输出：

Ember.js EmberObject toString()方法

示例2： 输入以下代码以生成该示例的路线：

ember generate route students

app/routes/students.js

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); 
    } 
}

app/controllers/students.js

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

app/template/students.hbs

{{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}}