极客教程Ember.js EmberArray setEach()方法
Ember.js是一种开源的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力。目前，它被许多网站使用，包括Square，Discourse，Groupon，Linked In，Live Nation，Twitch和Chipotle。
setEach()方法用于为每个成员设置指定属性的值。
语法：
setEach(key,value)
参数：
- key (string): 要设置的键。
- value (object): 要设置的值。
返回值： 结果数组。
安装并运行 Ember.js 的步骤：
步骤1： 要运行以下示例，您需要拥有一个 Ember 项目。要创建一个项目，您需要首先安装 ember-cli。在终端中写入以下代码：
npm install ember-cli
步骤2： 现在，您可以通过输入以下代码来创建项目：
ember new <project-name> --lang en
启动服务器，请输入：
ember serve
示例1
输入以下代码生成此示例的路由：
ember generate route details
app/routes/details.js
import Route from '@ember/routing/route';
export default class DetailsRoute extends Route {
details = [
{
'name': 'Anubhav',
'mobile': '1298119967',
'city': 'Patna',
'country': 'India',
'gender': 'M',
'zipCode': '800020'
},
{
'name': 'Sakshi',
'mobile': '1234567890',
'city': 'Mumbai',
'country': 'India',
'gender': 'F',
'zipCode': '400001'
},
{
'name': 'Satyam',
'mobile': '2222222222',
'city': 'Delhi',
'country': 'India',
'gender': 'M',
'zipCode': '110012'
},
{
'name': 'Shivam',
'mobile': '1122113322',
'city': 'Bangalore',
'country': 'India',
'gender': 'M',
'zipCode': '530068'
},
{
'name': 'Ayushi',
'mobile': '2244668800',
'city': 'Jaipur',
'country': 'India',
'gender': 'F',
'zipCode': '302001'
}
];
someMoreDetails = [
{
'name': 'Yeshwant',
'mobile': '1133557799',
'city': 'Chennai',
'country': 'India',
'gender': 'M',
'zipCode': '600001'
},
{
'name': 'Siddhant',
'mobile': '9911000000',
'city': 'Mangalore',
'country': 'India',
'gender': 'M',
'zipCode': '574142'
},
{
'name': 'Khushi',
'mobile': '8888888888',
'city': 'Pune',
'country': 'India',
'gender': 'F',
'zipCode': '111045'
}
];
city;
code;
model() {
return this.details;
}
setupController(controller, model) {
this._super(controller, model);
controller.set('details', this.details);
controller.set('someMoreDetails', this.someMoreDetails);
controller.set('city', this.city);
controller.set('code', this.code);
}
}
app/controllers/details.js
import Ember from 'ember';
import { pushObjects, shiftObject,
setEach } from '@ember/array';
export default Ember.Controller.extend({
actions: {
checkCity(city) {
alert(`Contains Person from {city}:
{this.details.isAny('city', city)?'Yes':'No'}`);
},
checkCountry() {
alert(`All are
${this.details.isEvery(
'country', 'India')?'':'not'} Indian`);
},
remove(){
this.details.shiftObject();
},
setZipCode(code){
this.details.setEach('zipCode', code);
},
pushMoreDetails(){
this.details.pushObjects(this.someMoreDetails);
}
},
});
app/template/details.hbs
{{page-title "Details"}}
<h3>List of People: </h3>
<br /><br />
<table>
<tr>
<th>Name</th>
<th>Gender</th>
<th>Mobile</th>
<th>City</th>
<th>Country</th>
<th>Zip Code</th>
</tr>
{{#each @model as |detail|}}
<tr>
<td>{{detail.name}}</td>
<td>{{detail.gender}}</td>
<td>{{detail.mobile}}</td>
<td>{{detail.city}}</td>
<td>{{detail.country}}</td>
<td>{{detail.zipCode}}</td>
</tr>
{{/each}}
</table>
<br /><br />
<div>
<label>Enter City: </label>
{{input value=this.city}}
</div>
<div>
<input type="button" id="check-city" value="Check City"
{{action 'checkCity' this.city}} />
</div>
<br /><br />
<div>
<label>Enter Code: </label>
{{input value=this.code}}
</div>
<div>
<input type="button" id="set-code" value="Set Zip Code"
{{action 'setZipCode' this.code}} />
</div>
<br /><br />
<input type="button" id="remove-detail" value="Remove"
{{action 'remove' }} />
<br /><br />
<input type="button" id="push-details" value="Add More Details"
{{action 'pushMoreDetails' }} />
<br /><br />
<input type="button" id="check-country" value="All Indian?"
{{action 'checkCountry' }} />
{{outlet}}
输出： 访问 localhost:4200/details 查看输出
示例2
输入以下代码生成此示例的路由：
ember generate route websites
app/routes/website.js
import Route from '@ember/routing/route';
export default class WebsitesRoute extends Route {
websites=[
{
'name': 'Wikipedia',
'link': 'www.wikipedia.com'
},
{
'name': 'Facebook',
'link': 'www.facebook.com'
},
{
'name': 'Google',
'link': 'www.google.com'
},
{
'name': 'Twitter',
'link': 'www.twitter.com'
}
];
moreWebsites = [
{
'name': 'Instagram',
'link': 'www.instagram.com'
},
{
'name': 'Amazon',
'link': 'www.amazon.com'
}
]
model() {
return this.websites;
}
setupController(controller, model) {
this._super(controller, model);
controller.set('websites', this.websites);
controller.set('moreWebsites', this.moreWebsites);
}
}
app/controllers/websites.js
import Ember from 'ember';
import { pushObjects, setEach } from '@ember/array';
export default Ember.Controller.extend({
actions: {
set(){
this.websites.setEach('name', 'GeeksforGeeks');
this.websites.setEach('link', 'www.geeksforgeeks.org');
},
add(){
this.websites.pushObjects(this.moreWebsites);
}
},
});
app/template/websites.hbs
{{page-title "Websites"}}
<h3>Websites</h3>
<br /><br />
<table>
<tr>
<th>Name</th>
<th>Website Link</th>
</tr>
{{#each @model as |website|}}
<tr>
<td>{{website.name}}</td>
<td>{{website.link}}</td>
</tr>
{{/each}}
</table>
<br /><br />
<input type="button" id="add-website"
value="More Websites" {{action 'add' }} />
<br /><br />
<input type="button" id="set-website"
value="Click Here" {{action 'set' }} />
{{outlet}}
输出: 访问localhost:4200/websites查看输出结果
https://api.emberjs.com/ember/4.6/classes/EmberArray/methods/