Ember.js Ember.Templates.helpers component() Method
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 component() method is used to lets you to add the instance of the component to templates.
Syntax:
{{ component functionName }}
Parameters:
- functionName: It is the name that decides the name of the component to the template.
Return Value: It doesn’t return anything.
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 server
Example 1: Type the following code to generate the route for this example:
ember generate route component1
app/controllers/component1.js
Javascript
import Ember from 'ember' ; import { tracked } from '@glimmer/tracking' ; export default Ember.Controller.extend({ @tracked isComp: 'true' , get isComponent(){ return this .isComp ? 'compact' : 'compact2' ; }, get isComponent2(){ return this .isComp ? 'compact2' : 'compact' ; }, }); |
app/component/compact.hbs
Javascript
<h1> this is first Component !!!</h1> |
app/component/compact2.hbs
Javascript
<h1> this is Second component!!</h1> |
app/template/component.hbs
Javascript
{{component this .isComponent}} <br/><br/> {{component this .isComponent2}} |
Output:
Example 2: Type the following code to generate the route for this example:
ember generate route component2
app/controllers/component2.js
Javascript
import Ember from 'ember' ; import { tracked} from '@glimmer/tracking' ; import { action} from '@ember/object' ; export default Ember.Controller.extend({ @tracked isComp: false , get isComponent(){ return this .isComp ? 'compact' : 'compact2' ; }, @action flip(){ this .isComp = ~ this .isComp; } }); |
app/component/compact.hbs
Javascript
<h1> this is first Component !!!</h1> |
app/component/compact2.hbs
Javascript
<h1> this is Second component!!</h1> |
app/templates/component2.hbs
Javascript
{{component this .isComponent}} <input type= "button" id= "decrease" value= "Change" {{action 'flip' }}/> |
Output:
Reference: https://api.emberjs.com/ember/4.4/classes/Ember.Templates.helpers/methods/component?anchor=component
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