Ember.js Component actions Property
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 actions Property of the Component class is the property that is used to define the action which will be available on ActionHandler as action targets. These functions will be invoked when a matching action is triggered from the templates.
Syntax:
@action function(){// function logic}
Parameters:
- function: It is the name function to define.
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 file1
app/components/third.js
Javascript
import Component from '@glimmer/component' ; import { tracked } from '@glimmer/tracking' ; import { action } from '@ember/object' ; import Ember from 'ember' ; export default Ember.Component.extend({ @tracked name: 'Gulshan Sahu' , @tracked gender: 'M' , @tracked class: 12, @tracked grade: 'A' , @tracked salary: 78000, @tracked mobile: 983938494, @tracked email: 'gulshasahu@gmail.com' , @action increase(){ this .incrementProperty( 'salary' , 1000); }, @action decrease() { this .decrementProperty( 'salary' , 1000); }, }) |
app/components/third.hbs
HTML
{{page-title "Component action"}} {{yield}} < div >Name: {{this.name}}</ div > < div >Gender: {{this.gender}}</ div > < div >Grade: {{this.grade}}</ div > < div >Class: {{this.class}}</ div > < div >Salary: {{this.salary}}</ div > < div >Mobile: {{this.mobile}}</ div > < div >Email: {{this.email}}</ div > < br /> < br />< br /> < input type = "button" id = "increment-money" value = "Increase Money" {{action "increase"}} /> < br />< br /> < input type = "button" id = "decrement-money" value = "Decrease Money" {{action "decrease"}} /> {{outlet}} |
app/file1.js
HTML
< Third > < h1 >Person's Details :</ h1 > </ Third > |
Output:
Example 2: Type the following code to generate the route for this example:
ember generate route file2
app/components/fourth.js
Javascript
import Component from '@glimmer/component' ; import { tracked } from '@glimmer/tracking' ; import Ember from 'ember' ; import { action } from '@ember/object' ; import ArrayProxy from '@ember/array/proxy' ; import { A } from '@ember/array' ; export default class extends Component { @tracked item; @tracked value = Food.create({ value: 0, }); @tracked list1 = [ "a" , "a" , "v" , "c" , "c" , "a" , "d" , "q" , "b" , "z" , "a" ]; @tracked list = ArrayProxy.create({ content: A( this .list1), }) @action removeItem(item) { this .list.removeObject(item); } @action rotate() { this .list.reverseObjects(); } } |
app/components/fourth.hbs
HTML
{{page-title "Component action"}} < h3 >Here is a list of Items: </ h3 > < ul > {{#each this.list as |i|}} < li >{{i}}</ li > {{/each}} </ ul > < br /> < div > < label >Enter Index: </ label > {{input value=this.item}} </ div > < div > < input type = "button" id = "remove-item" value = "remove Item" {{action "removeItem" this.item}} /> </ div > < br /> < div > < input type = "button" id = "rotate-item" value = "rotate Item" {{action "rotate" }} /> </ div > {{outlet}} |
app/templates/file.hbs
HTML
< Fourth > This is Main templates class </ Fourth > |
Output:
Reference: https://api.emberjs.com/ember/4.9/classes/Component/properties/actions?anchor=actions
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