Ember.js is an open-source JavaScript framework used for developing large client-side web applications which is based on Model-View-Controller (MVC) architecture. Ember.js is one of the most widely used front-end application frameworks. It is made to speed up development and increase productivity. Currently, it is utilized by a large number of websites, including Square, Discourse, Groupon, Linked In, Live Nation, Twitch, and Chipotle.
The forEach() method is used to iterate over the array and call a function on each element of the array.
Syntax:
forEach(callback, target)
Parameters:
- callback: It is the callback function that will invoke each item of the array.
- target: It is the target value for which the callback function will invoke.
Return Value: The receiver.
Steps to Install and Run Ember.js:
Step 1: To run the following examples you will need to have an ember project with you. To create one, you will need to install ember-cli first. Write the below code in the terminal:
npm install ember-cli
Step 2: Now you can create the project by typing in the following piece of code:
ember new <project-name> --lang en
To start the server, type:
ember serve
Example 1: Type the following code to generate the route for this example:
ember generate route forEach1
import Route from '@ember/routing/route' ;
export default class FruitsRoute extends Route {
fruits = [
{
'name' : 'Lady Finger' ,
'isFruit' : false ,
'color' : 'green'
},
{
'name' : 'Brinjal' ,
'isFruit' : false ,
'color' : 'purple'
},
{
'name' : 'Apple' ,
'isFruit' : true ,
'color' : 'red'
},
{
'name' : 'Grapes' ,
'isFruit' : true ,
'color' : 'green'
},
{
'name' : 'Mango' ,
'isFruit' : true ,
'color' : 'yellow'
},
{
'name' : 'Watermelon' ,
'isFruit' : true ,
'color' : 'red'
},
{
'name' : 'Orange' ,
'isFruit' : true ,
'color' : 'orange'
}
];
item2;
item3;
hello(data) {
this .set( 'color' , data);
}
init() {
this ._super(...arguments);
this .fruits.addObserver( 'color' , this , 'hello' );
}
model() {
this .init();
return this .fruits;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'fruits' , this .fruits);
controller.set( 'item1' , this .item1);
controller.set( 'item2' , this .item2);
controller.set( 'item3' , this .item3);
}
} |
import Ember from "ember" ;
import { addObject, isAny, isEvery } from "@ember/array" ;
export default Ember.Controller.extend({
actions: {
print_Color() {
let temp = '' ;
this .fruits.forEach((item) => temp +=
`${item.name} is ${item.color} color` + '\n' );
alert(temp ? temp : 'No item in list' )
},
remove() {
this .fruits.clear();
},
},
}); |
{{page-title "Fruits" }}
<h3>Here is a list of eatables: </h3> <table> <tr>
<th>Name</th>
<th>Fruit</th>
<th>Color</th>
</tr>
{{ #each @model as |detail|}}
<tr>
<td>{{detail.name}}</td>
<td>{{detail.isFruit}}</td>
<td>{{detail.color}}</td>
</tr>
{{/each}}
</table> <br/><br/> <div> <input type= "button"
id= "addFruit"
value= "Find All the Colors of Fruit"
{{action "print_Color" }}>
</div> <br/> <div> <input type= "button"
id= "removeFruit"
value= "Clear"
{{action "remove" }}>
</div> {{outlet}} |
Output: Visit localhost:4200/forEach1 to view the output:
Example 2: Type the following code to generate the route for this example:
ember generate route forEach2
import Route from '@ember/routing/route' ;
export default class DetailsRoute
extends Route {
details = [
{
name: 'Aaksh' ,
mobile: '9811129967' ,
city: 'Delhi' ,
country: 'India' ,
gender: 'M' ,
zipCode: '800020' ,
},
{
name: 'Sweta' ,
mobile: '9456712890' ,
city: 'Mumbai' ,
country: 'India' ,
gender: 'F' ,
zipCode: '400001' ,
},
{
name: 'Satyam' ,
mobile: '2222222222' ,
city: 'Raipur' ,
country: 'India' ,
gender: 'M' ,
zipCode: '110012' ,
},
{
name: 'Shandya' ,
mobile: '1122113322' ,
city: 'Bangalore' ,
country: 'India' ,
gender: 'F' ,
zipCode: '530068' ,
},
{
name: 'Ayushi' ,
mobile: '2244668800' ,
city: 'Thana' ,
country: 'India' ,
gender: 'F' ,
zipCode: '302001' ,
},
{
name: 'Yogesh' ,
mobile: '1133557799' ,
city: 'Chennai' ,
country: 'India' ,
gender: 'F' ,
zipCode: '600001' ,
},
{
name: 'Sunny' ,
mobile: '9911000000' ,
city: 'Masore' ,
country: 'India' ,
gender: 'M' ,
zipCode: '574142' ,
},
{
name: 'Khushi' ,
mobile: '8888888888' ,
city: 'Pune' ,
country: 'India' ,
gender: 'F' ,
zipCode: '111045' ,
},
];
city;
model() {
return this .details;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'details' , this .details);
controller.set( 'someMoreDetails' , this .someMoreDetails);
controller.set( 'city' , this .city);
}
} |
import Ember from 'ember' ;
import { addObjects, reduce } from '@ember/array' ;
export default Ember.Controller.extend({
actions: {
show_Name() {
let temp = '' ;
this .details.forEach((person)=>
temp += person.name + '\n' );
alert(temp);
},
print_Female() {
let temp = '' ;
this .details.forEach((person)=> person.gender ==
'F' ? temp += person.name + '\n' : temp);
alert(temp);
},
hide_Number() {
this .details.forEach((person)=> Ember.set
(person, 'mobile' , "**********" ));
},
},
}); |
{{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> <input type= "button" id= "print-city" value= "Print All Name" {{action 'show_Name' }} />
</div> <br /> <div> <input type= "button" id= "print-female" value= "Print All Females" {{action 'print_Female' }} />
</div> <br /> <div> <input type= "button" id= "hide-number" value= "Hide All Phone number" {{action 'hide_Number' }} />
</div> {{outlet}} |
Output: Visit localhost:4200/forEach2 to view the output
Reference: https://api.emberjs.com/ember/4.6/classes/ArrayProxy/methods/forEach?anchor=forEach