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 run a function on every item of the array.
Syntax:
forEach(callback, target)
Parameters:
- callback: The callback function to execute.
- target: The target object to use.
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 details
import Route from '@ember/routing/route' ;
export default class DetailsRoute extends Route {
details = [
{
name: 'Anubhav' ,
mobile: '1298119967' ,
age: 20,
salary: 10000,
city: 'Patna' ,
country: 'India' ,
gender: 'M' ,
zipCode: '800020' ,
},
{
name: 'Sakshi' ,
mobile: '1234567890' ,
age: 17,
salary: 2000,
city: 'Mumbai' ,
country: 'India' ,
gender: 'F' ,
zipCode: '400001' ,
},
{
name: 'Satyam' ,
mobile: '2222222222' ,
age: 42,
salary: 230000,
city: 'Delhi' ,
country: 'India' ,
gender: 'M' ,
zipCode: '110012' ,
},
{
name: 'Shivam' ,
mobile: '1122113322' ,
age: 33,
salary: 122200,
city: 'Patna' ,
country: 'India' ,
gender: 'M' ,
zipCode: '530068' ,
},
{
name: 'Ayushi' ,
mobile: '2244668800' ,
age: 11,
salary: 100,
city: 'Jaipur' ,
country: 'India' ,
gender: 'F' ,
zipCode: '302001' ,
},
{
name: 'Yeshwant' ,
mobile: '1133557799' ,
age: 19,
salary: 5000,
city: 'Chennai' ,
country: 'India' ,
gender: 'M' ,
zipCode: '600001' ,
},
{
name: 'Siddhant' ,
mobile: '9911000000' ,
age: 65,
salary: 992130,
city: 'Mangalore' ,
country: 'India' ,
gender: 'M' ,
zipCode: '574142' ,
},
{
name: 'Khushi' ,
mobile: '8888888888' ,
age: 10,
salary: 0,
city: 'Pune' ,
country: 'India' ,
gender: 'F' ,
zipCode: '111045' ,
},
];
model() {
return this .details;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'details' , this .details);
}
} |
import Ember from 'ember' ;
import { any, slice, reverseObjects, rejectBy } from '@ember/array' ;
export default Ember.Controller.extend({
actions: {
getAllNames() {
let tempItems = this .details.getEach( 'name' );
let str = '' ;
for (let i = 0; i < tempItems.length; i++)
str += tempItems[i] + '\n' ;
alert(str);
},
allAdult() {
let res = this .details.every((person) =>
person.age > 18);
alert(`${res ? 'YES' : 'NO' }`);
},
getFemale() {
let tempItems = this .details.filter((person) =>
person.gender === 'F' );
let str = '' ;
for (let i = 0; i < tempItems.length; i++)
str += tempItems[i].name + '\n' ;
alert(str);
},
increaseSalary() {
this .details.forEach((person) =>
Ember.set(person, 'salary' ,
person.salary + 1000)
);
},
hideNumber() {
this .details.map((person) => Ember.set
(person, 'mobile' , '**********' ));
},
clearAll() {
this .details.clear();
},
},
}); |
{{page-title "Details"}} < h3 >List of People: </ h3 >
< br />< br />
< table >
< tr >
< th >Name</ th >
< th >Gender</ th >
< th >Age</ th >
< th >Salary</ 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.age}}</ td >
< td >{{detail.salary}}</ td >
< td >{{detail.mobile}}</ td >
< td >{{detail.city}}</ td >
< td >{{detail.country}}</ td >
< td >{{detail.zipCode}}</ td >
</ tr >
{{/each}}
</ table >
< br />< br />
< input
type = "button"
id = "get-all"
value = "Get All Names"
{{action "getAllNames"}}
/> < br />< br />
< input
type = "button"
id = "get-all-adult"
value = "Is there only adult?"
{{action "allAdult"}}
/> < br />< br />
< input
type = "button"
id = "get-female"
value = "Get Female"
{{action "getFemale"}}
/> < br />< br />
< input
type = "button"
id = "increase-salary"
value = "Increase Salary"
{{action "increaseSalary"}}
/> < br />< br />
< input
type = "button"
id = "hide-number"
value = "Hide Number"
{{action "hideNumber"}}
/> < br />< br />
< input type = "button"
id = "clear-all" value = "Clear" {{action "clearAll"}}
/> |
Output: Visit localhost:4200/details to view the output
Example 2: Type the following code to generate the route for this example:
ember generate route students
import Route from '@ember/routing/route' ;
export default class StudentsRoute extends Route {
students = [
{
name: 'Alix Mainston' ,
gender: 'F' ,
class: 9,
grade: 'B' ,
pocket_money: 9643,
},
{
name: 'Mufinella Lezemore' ,
gender: 'F' ,
class: 10,
grade: 'A' ,
pocket_money: 6960,
},
{
name: 'Sibylla Hanbridge' ,
gender: 'F' ,
class: 8,
grade: 'D' ,
pocket_money: 2272,
},
{
name: 'Wilow Lingwood' ,
gender: 'F' ,
class: 8,
grade: 'A' ,
pocket_money: 4279,
},
{
name: 'Estele MacIllrick' ,
gender: 'M' ,
class: 9,
grade: 'E' ,
pocket_money: 2579,
},
{
name: 'Israel Blackaller' ,
gender: 'M' ,
class: 10,
grade: 'A' ,
pocket_money: 9381,
},
{
name: 'Doralyn Sowerbutts' ,
gender: 'F' ,
class: 12,
grade: 'A' ,
pocket_money: 4933,
},
{
name: 'Lolly Boynes' ,
gender: 'F' ,
class: 8,
grade: 'A' ,
pocket_money: 1988,
},
{
name: 'Lucie Janowski' ,
gender: 'F' ,
class: 11,
grade: 'F' ,
pocket_money: 6185,
},
{
name: 'Camilla Ritelli' ,
gender: 'Bigender' ,
class: 9,
grade: 'C' ,
pocket_money: 1105,
},
{
name: 'Celene Enticknap' ,
gender: 'F' ,
class: 9,
grade: 'A' ,
pocket_money: 7186,
},
{
name: 'Hillier Buchanan' ,
gender: 'M' ,
class: 12,
grade: 'A' ,
pocket_money: 844,
},
{
name: 'Afton Povey' ,
gender: 'F' ,
class: 9,
grade: 'F' ,
pocket_money: 6633,
},
{
name: 'Flint Chesley' ,
gender: 'M' ,
class: 9,
grade: 'B' ,
pocket_money: 3835,
},
{
name: 'Sigfrid Copper' ,
gender: 'M' ,
class: 8,
grade: 'D' ,
pocket_money: 3883,
},
{
name: 'Barry Donnelly' ,
gender: 'M' ,
class: 12,
grade: 'C' ,
pocket_money: 4521,
},
{
name: 'Buck Polgreen' ,
gender: 'M' ,
class: 8,
grade: 'C' ,
pocket_money: 553,
},
];
model() {
return this .students;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'students' , this .students);
}
} |
import Ember from 'ember' ;
export default Ember.Controller.extend({
actions: {
getAllNames() {
let tempItems = this .students.getEach( 'name' );
let str = '' ;
for (let i = 0; i < tempItems.length; i++)
str += tempItems[i] + '\n' ;
alert(str);
},
allPass() {
let res = this .students.every((student)
=> student.grade != 'F' );
alert(`${res ? 'YES' : 'NO' }`);
},
getFemale() {
let tempItems = this .students.filter((student)
=> student.gender === 'F' );
let str = '' ;
for (let i = 0; i < tempItems.length; i++)
str += tempItems[i].name + '\n' ;
alert(str);
},
changeGrade() {
this .students.forEach((student) =>
Ember.set(student, 'grade' , 'A' )
);
},
increasePocketMoney() {
this .students.map((student) =>
Ember.set(student, 'pocket_money' ,
student.pocket_money + 1000)
);
},
},
}); |
{{page-title "Students"}} < h3 >List of Students: </ h3 >
< br />< br />
< table >
< tr >
< th >Name</ th >
< th >Class</ th >
< th >Gender</ th >
< th >Grade</ th >
< th >Pocket Money</ th >
</ tr >
{{#each @model as |student|}}
< tr >
< td >{{student.name}}</ td >
< td >{{student.class}}</ td >
< td >{{student.gender}}</ td >
< td >{{student.grade}}</ td >
< td >{{student.pocket_money}}</ td >
</ tr >
{{/each}}
</ table >
< br />< br />
< input
type = "button"
id = "get-all"
value = "Get All Names"
{{action "getAllNames"}}
/> < br />< br />
< input
type = "button"
id = "all-pass"
value = "Did Everyone Pass?"
{{action "allPass"}}
/> < br />< br />
< input
type = "button"
id = "get-female"
value = "Get Female"
{{action "getFemale"}}
/> < br />< br />
< input
type = "button"
id = "increase-pocket-money"
value = "Increase Pocket Money"
{{action "increasePocketMoney"}}
/> < br />< br />
< input
type = "button"
id = "change-grade"
value = "Change Grade"
{{action "changeGrade"}}
/> {{outlet}} |
Output: Visit localhost:4200/students to view the output
Reference: https://api.emberjs.com/ember/4.4/classes/MutableArray/methods