Ember.js ArrayProxy incrementProperty() Method

Last Updated : 17 Jan, 2023

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 the value of a property to the current value plus some amount.

Syntax:

incrementProperty( keyName, increment );

Parameters:

keyName: It is the name of the property to increment.
increment: It is the value by which the property will increment.

Return Value: The new property value.

Steps to Install and Run Ember.js:

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

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 increment1

app/controllers/increment1.js

import Ember from 'ember'; 
import { incrementProperty } 
    from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    year: 2022, 
    month: 9, 
    date: 15, 
    actions: { 
        olderD() { 
            this.incrementProperty('date'); 
        }, 
        youngerD() { 
            this.decrementProperty('date'); 
        }, 
        olderY() { 
            this.incrementProperty('year'); 
        }, 
        youngerY() { 
            this.decrementProperty('year'); 
        }, 
        olderM() { 
            this.incrementProperty('month'); 
        }, 
        youngerM() { 
            this.decrementProperty('month'); 
        }, 
    }, 
});

app/templates/increment1.hbs

{{page-title "Details"}} 
<h1>Year {{this.year}}</h1> 
<input type="button" id="increase"
    value="+" {{action 'olderY'}}/> 
<input type="button" id="decrease"
    value="-" {{action 'youngerY'}}/> 
<hr/> 
<h1>Month {{this.month}}</h1> 
<input type="button" id="increase"
    value="+" {{action 'olderM'}}/> 
<input type="button" id="decrease"
    value="-" {{action 'youngerM'}}/> 
<hr/> 
<h1>Date {{this.date}}</h1> 
<input type="button" id="increaseD"
    value="+" {{action 'olderD'}}/> 
<input type="button" id="decrease"
    value="-" {{action 'youngerD'}}/> 
{{outlet}}

Output: Visit localhost:4200/increment1 to view the output

Ember.js ArrayProxy incrementProperty method

Example 2: Type the following code to generate the route

for this example:

ember generate route increment2

app/routes/increment2.js

import Route from '@ember/routing/route'; 
  
export default class WebsitesRoute extends Route { 
    food = [ 
        { 
            food: 'apple', 
            isFruit: true, 
            quant: '1', 
        }, 
        { 
            food: 'Potato', 
            isFruit: false, 
            quant: '2', 
        }, 
        { 
            food: 'Banana', 
            isFruit: true, 
            quant: '1', 
        }, 
        { 
            food: 'Burgur', 
            isFruit: false, 
            quant: '2', 
        }, 
        { 
            food: 'Orange', 
            isFruit: true, 
            quant: '1', 
        }, 
        { 
            food: 'sandwitch', 
            isFruit: false, 
            quant: '2', 
        }, 
        { 
            food: 'bean', 
            isFruit: false, 
            quant: '2', 
        }, 
    ]; 
    temp; 
    model() { 
        return this.food; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('food', this.food); 
        controller.set('temp', this.temp); 
        controller.set('temp2', this.temp2); 
    } 
}

app/controllers/increment2.js

import Ember from 'ember'; 
  
export default Ember.Controller.extend({ 
    value: 0, 
    actions: { 
        older() { 
            this.incrementProperty('value'); 
        }, 
        younger() { 
            this.decrementProperty('value'); 
        }, 
  
        addItem(data, data1, data2) { 
            let temp = {  
                food: data,  
                quant: data1,  
                isFruit: data2  
            } 
            this.food.addObject(temp) 
        }, 
    }, 
});

app/templates/increment2.hbs

{{page-title "increaseProperty"}} 
<h3>List of Item in Buckets</h3> 
  
<table> 
    <tr> 
        <th> Food Name   </th> 
        <th>Bucket  </th> 
        <th>Fruit  </th> 
    </tr> 
    {{#each @model as |website|}} 
    <tr> 
        <td>{{website.food}}</td> 
        <td>{{website.quant}}</td> 
        <td>{{website.isFruit}}</td> 
    </tr> 
    {{/each}} 
</table> 
<br /><br /> 
  
<div> 
    <label>Enter Item Name: </label> 
    {{input value=this.temp2}} 
</div> 
<br /> 
  
<div> 
    <label>Enter Quantity in Kg: </label> 
    {{input value=this.value}} 
</div> 
<input type="button" id="increase"
    value="+" {{action 'older'}}/> 
<input type="button" id="decrease"
    value="-" {{action 'younger'}}/> 
<br/> 
<br /> 
  
<div> 
    <label>Item is fruit of not : </label> 
    {{input value=this.temp}} 
</div> 
<br /><br /> 
<input type="button" id="all-Fruits"
    value="Add item"
    {{action 'addItem' this.temp2 this.value this.temp}} /> 
{{outlet}}