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Embeer.js Ember.NativeArray sortBy()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。

sortBy() 方法用于按指定键对数组进行排序。

用法:

sortBy(key);

参数:

  • name(string): 排序依据的名称。

返回值:已排序的数组。

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 languages

应用程序/路线/语言.js:

Javascript


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;
    }
}

应用程序/模板/语言.js:

HTML


{{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/linguals 查看输出

示例 2:键入以下代码以生成本示例的路由:

ember generate route richest-people

应用程序/路线/richest-people.js:

Javascript


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;
    }
}

应用程序/模板/richest-people.hbs:

HTML


{{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:访问本地主机:4200/richest-people查看输出

参考:https://api.emberjs.com/ember/4.6/classes/Ember.NativeArray/methods



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