Ember.js Ember.NativeArray sortBy()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是最常用的前端应用框架之一。它旨在加快开发速度和提高生产力。目前，它被许多网站使用，包括Square、Discourse、Groupon、Linked In、Live Nation、Twitch和Chipotle。

sortBy()方法用于按指定的键对数组进行排序。

语法：

sortBy(key);

参数：

name(string)：要进行排序的名称。

返回值： 排序后的数组。

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。在终端中输入以下代码：

npm install ember-cli

步骤2： 现在，您可以通过输入以下代码片段来创建项目：

ember new <project-name> --lang en

启动服务器，请输入以下命令：

ember serve

示例1: 输入以下代码以生成此示例的路线：

ember generate route languages

app/routes/languages.js:

import Route from '@ember/routing/route';
import { classify, w } from '@ember/string';
import { pushObject, sortBy } from '@ember/array';
 
export default class LanguagesRoute extends Route {
    name =
        `mandarin_Chinese spanish english Hindi 
        bengali Portuguese russian japanese 
        western_punjabi yueChinese`;
    num = `929.0 474.7 372.9 343.9 233.7 
        232.4 154.0 125.3 92.7 85.2`;
 
    languages = [];
 
    initLanguages() {
        this.languages = [];
        this.name = w(this.name);
        this.num = w(this.num);
        for (let i = 0; i < this.name.length; i++) {
            let obj = new Object();
            obj['name'] = classify(this.name[i]);
            obj['num'] = this.num[i];
            this.languages.pushObject(obj);
        }
    }
 
    model() {
        this.initLanguages();
        this.languages = this.languages.sortBy('name');
        return this.languages;
    }
}

app/template/languages.js:

{{page-title "Languages"}}
<h2>Most Spoken Languages in the World</h2>
<table style="border: 2px solid black;padding: 30px;">
    <tr>
        <th>Language</th>
        <th>Native Speakers (millions)</th>
      </tr>
      {{#each @model as |language|}}
    <tr>
        <td>{{language.name}}</td>
          <td>{{language.num}}</td>
        </tr>
      {{/each}}
</table>
{{outlet}}

输出： 访问 localhost:4200/languages 查看输出

Ember.js Ember.NativeArray sortBy()方法

示例2: 键入以下代码以生成此示例的路由：

ember generate route richest-people

app/routes/richest-people.js:

import Route from '@ember/routing/route';
import { sortBy } from '@ember/array';
 
export default class RichestPeopleRoute extends Route {
    richestPeople = [
        { 'name': 'mukesh ambani', 'net-worth': 90.7 },
        { 'name': 'jeff Bezos', 'net-worth': 148.1 },
        { 'name': 'Warren Buffet', 'net-worth': 99.3 },
        { 'name': 'Bill gates', 'net-worth': 104.7 },
        { 'name': 'elon Musk', 'net-worth': 253.4 },
        { 'name': 'gautam adani and family', 
            'net-worth': 115.8 },
        { 'name': 'Larry Page', 'net-worth': 93.4 },
        { 'name': 'larryEllison', 'net-worth': 103.3 },
        { 'name': 'sergeyBrin', 'net-worth': 89.9 },
        { 'name': 'bernard Arnault and family', 
            'net-worth': 157.1 },
    ];
    model() {
        this.richestPeople = 
            this.richestPeople.sortBy('net-worth');
        return this.richestPeople;
    }
}

app/template/richest-people.hbs：

{{page-title "Richest People"}}
<h2>Top 10 Richest people in the World</h2>
<table style="border: 2px solid black;padding: 30px;">
    <tr>
        <th>Name</th>
        <th>Net Worth (in Billion Dollars)</th>
    </tr>
    {{#each @model as |person|}}
    <tr>
        <td>{{person.name}}</td>
        <td>{{person.net-worth}}</td>
    </tr>
   {{/each}}
</table>
{{outlet}}

输出： 访问 localhost:4200/richest-people 查看输出

Ember.js Ember.NativeArray sortBy()方法