Ember.js RouterService incrementProperty() Method
Last Updated :
01 Nov, 2022
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 incrementProperty() method is used to set a property’s value to its current value plus a certain amount.
Syntax:
incrementProperty(key,increment)
Parameters:
- key: The name of the property to decrement.
- increment: The amount to reduce.
Returns: The new incremented value.
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 students
app/route/students.js
Javascript
import Route from '@ember/routing/route' ;
import EmberObject from '@ember/object' ;
const Student = EmberObject.extend({
init() {
console.log(`Name is ${ this .get( 'name' )}`);
}
});
export default class StudentsRoute extends Route {
student;
createStudent() {
let student = Student.create({
name: 'Alix Mainston' ,
gender: 'F' ,
class: 9,
grade: 'B' ,
marks: 98,
pocket_money: 9643,
});
return student;
}
getGrade(student) {
return student.get( 'grade' );
}
setGender(student) {
return student.set( 'gender' , 'F' );
}
decreaseMarks(student) {
student.decrementProperty( 'marks' );
}
increasePocketMoney(student) {
student.incrementProperty( 'pocket_money' , 1000);
}
model() {
this .student = this .createStudent();
this .student.grade = this .getGrade( this .student);
this .student.gender = this .setGender( this .student);
this .decreaseMarks( this .student);
this .increasePocketMoney( this .student);
return this .student;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'student' , this .student);
}
}
|
app/template/students.hbs
HTML
{{page-title "Students"}}
< h1 >Details:</ h1 >
< div >Name: {{this.student.name}}</ div >
< div >Gender: {{this.student.gender}}</ div >
< div >Class: {{this.class}}</ div >
< div >Grade: {{this.student.grade}}</ div >
< div >Marks: {{this.student.marks}}</ div >
< div >Pocket Money: {{this.student.pocket_money}}</ div >
{{outlet}}
|
Output:
Example 2: Type the following code to generate the route for this example:
ember generate route details
app/route/details.js
Javascript
import Route from '@ember/routing/route' ;
import EmberObject from '@ember/object' ;
import StudentsRoute from './students' ;
const Person = EmberObject.extend({
init() {
console.log( 'Init Function called....' );
},
});
export default class DetailsRoute extends Route {
person;
createPerson() {
let person = Person.create({
name: 'Anubhav' ,
mobile: '1298119967' ,
age: 20,
salary: 10000,
city: 'Patna' ,
country: 'India' ,
gender: 'M' ,
zipCode: '800020' ,
});
return person;
}
changeName(person) {
return person.set( 'name' , 'Aayush' );
}
getGender(person) {
return person.get( 'gender' );
}
increaseSalary(person) {
person.incrementProperty( 'salary' , 10000);
}
decreaseAge(person) {
person.decrementProperty( 'age' );
}
model() {
this .person = this .createPerson();
this .person.name = this .changeName( this .person);
this .person.gender = this .getGender( this .person);
this .increaseSalary( this .person);
this .decreaseAge( this .person);
console.log( this .person);
return this .person;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'person' , this .person);
}
}
|
app/template/details.hbs
HTML
{{page-title "Details"}}
< h1 >Person</ h1 >
< div >Name: {{this.person.name}}</ div >
< div >Age: {{this.person.age}}</ div >
< div >Salary: {{this.person.salary}}</ div >
< div >Gender: {{this.person.gender}}</ div >
< div >Zip Code: {{this.person.zipCode}}</ div >
< div >Mobile: {{this.person.mobile}}</ div >
{{outlet}}
|
Output:
Reference: https://api.emberjs.com/ember/4.7/classes/RouterService/methods
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