Ember.js Service init() Method

Last Updated : 26 Apr, 2025

Ember.js is an open-source JavaScript framework used for developing large client-side web applications which are 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 init() is the method that is invoked whenever the object is instantiated.

Syntax:

init(){// Method algorithm };

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 init1

app/routes/init1.js

Javascript

import Route from '@ember/routing/route';
import Ember from 'ember';
 
const Student = Ember.Object.extend({
 
    // These will be supplied by `create`
    firstName: null,
    lastName: null,
 
    init() {
        alert(`${this.get('firstName')} is Listed`);
    },
    fullName: Ember.computed('firstName', 'lastName', function () {
        return `${this.firstName} ${this.lastName}`;
    }),
 
});
export default class PartyRoute extends Route {
    students = [
        Student.create({
            firstName: 'Balit',
            lastName: 'stark',
            Id: 'stu2',
        }),
        Student.create({
            firstName: 'Permu',
            lastName: 'scott',
            Id: 'stu0',
        }),
        Student.create({
            firstName: 'Sam',
            lastName: 'melo',
            Id: 'stu1',
        }),
        Student.create({
            firstName: 'Pokhu',
            lastName: 'Verma',
            Id: 'stu3',
        }),
        Student.create({
            firstName: 'Tanu',
            lastName: 'Agrawal',
            Id: 'stu4',
        }),
        Student.create({
            firstName: 'Arabh',
            lastName: 'Singh',
            Id: 'stu5',
        })];
 
    item3 = 'Gulshan';
    item2 = 'Verma';
    item1 = 'stu6';
    model() {
        return this.person;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('students', this.students);
        controller.set('item1', this.item1);
        controller.set('item2', this.item2);
        controller.set('item3', this.item3);
    }
}

app/controllers/init1.js

Javascript

import Controller from '@ember/controller';
import { action, find } from '@ember/object';
import Ember from 'ember';
 
const Student = Ember.Object.extend({
 
    // These will be supplied by `create`
    firstName: null,
    lastName: null,
 
    init() {
        alert(`${this.get('firstName')} is Listed`);
    },
    fullName: Ember.computed('firstName', 'lastName', function () {
        return `${this.firstName} ${this.lastName}`;
    }),
 
    Changed: Ember.observer('fullName', function () {
        console.log(`fullName changed to: ${this.fullName}`);
    }),
});
export default class Array2Controller extends Controller {
 
    @action
    print(data1, data2, data3) {
        let temp = Student.create({
            firstName: data1,
            lastName: data2,
            Id: data3
        });
        this.students.addObject(temp);
    }
}

app/templates/init1.hbs

HTML

<h3>Student's List :</h3>
<table>
    <tr>
        <th>Name</th>
        <th>Id</th>
      </tr>
      {{#each this.students as |detail|}}
    <tr>
        <td>{{detail.fullName}}</td>
          <td>{{get detail "Id"}}</td>
    </tr>
      {{/each}}
</table>
<br />
<div>
    <label>Enter Student FirstName: </label>
      {{input value=this.item3}}
</div>
<br />
<div>
    <label>Enter Student LastName: </label>
      {{input value=this.item2}}
</div>
<br />
<div>
    <label>Enter Student Id: </label>
      {{input value=this.item1}}
</div>
<br />
<input
    type="button"
      id="set-code"
      value="Update Student details"
      {{action "print" this.item3 this.item2 this.item1}}
/>

Output:

Ember.js Service init() Method

Example 2: Type the following code to generate the route for this example:

ember generate route init2

app/routes/init2.js

Javascript

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;
 
    model() {
        return this.fruits;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('fruits', this.fruits);
    }
}

app/controllers/init2.js

Javascript

import Ember from "ember";
import { addObject, isAny, isEvery } from "@ember/array";
import EmberObject from '@ember/object';
 
const Fruit = EmberObject.extend({
    init() {
        alert(`Name is ${this.get('name')}`);
    }
});
export default Ember.Controller.extend({
    actions: {
        print_Color() {
            let temp = '';
            this.fruits.forEach((item) => temp += `${item.name} is
  ${item.color} color` + '\n');
            alert(temp ? temp : 'No item in list')
        },
        remove() {
            this.fruits.clear();
 
        },
        insertItem(data, data1, data2) {
            let temp = Fruit.create({
                name: data,
                isFruit: data1,
                color: data2
            });
            this.fruits.addObject(temp);
        }
    },
});

app/templates/init2.hbs

HTML

{{page-title "Init"}}
<h3>Fruit's List :</h3>
<table>
    <tr>
        <th>Name</th>
        <th>Fruit</th>
        <th>Color</th>
      </tr>
      {{#each this.fruits as |detail|}}
    <tr>
        <td>{{detail.name}}</td>
          <td>{{detail.isFruit}}</td>
          <td>{{detail.color}}</td>
    </tr>
      {{/each}}
</table>
<br /><br />
<div>
    <label>Enter Fruit Name: </label>
      {{input value=this.item1}}
</div><br />
<div>
    <label>Item is Fruit: </label>
      {{input value=this.item2}}
</div><br />
<div>
    <label>Enter Fruit color: </label>
      {{input value=this.item3}}
</div><br />
<div>
    <input
        type="button"
        id="insert-item"
        value="Insert Fruit"
        {{action "insertItem" this.item1 this.item2 this.item3}}
  />
</div>
{{outlet}}