Ember.js Component getProperties() Method
Last Updated :
05 Dec, 2022
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 getProperties() method is used to get the value of multiple properties at once. This method is used with a list of keys.
Syntax:
getProperties( list );
Parameters:
- list: It is a list of keys to get.
Return Value: Object with passed keys and its 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 getProperties1
app/components/arr.js
Javascript
import Component from '@glimmer/component' ;
import Ember from 'ember' ;
import EmberObject from '@ember/object' ;
import { action, without, set, get } from '@ember/object' ;
const Fruit = EmberObject.extend({
init() {
alert(`${ this .get( 'name' )} is in list Now`);
}
});
export default Ember.Component.extend({
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'
}
],
@action
insertItem(data, data1, data2) {
let temp = Fruit.create({
name: data,
isFruit: data1,
color: data2
});
this .fruits.addObject(temp);
},
@action
list() {
let list = '' ;
this .fruits.map((item) => list +=
item.name + ` is ${item.color}` + '\n' );
alert(list)
},
})
|
app/components/arr.hbs
HTML
{{page-title "Init"}}
< h3 >{{yield}}</ h3 >
< table >
< tr >
< th >Name</ th >
< th >Fruit</ th >
< th >Color</ th >
</ tr >
{{#each this.fruits as |detail|}}
< tr >
< td >{{detail.name}}</ td >
< td >{{detail.isFruit}}</ td >
< td >{{detail.color}}</ td >
</ tr >
{{/each}}
</ table >
< br />< br />
< div >
< label >Enter Fruit Name: </ label >
{{input value=this.item1}}
</ div >< br />
< div >
< label >Item is Fruit: </ label >
{{input value=this.item2}}
</ div >< br />
< div >
< label >Enter Fruit color: </ label >
{{input value=this.item3}}
</ div >< br />
< div >
< input
type = "button"
id = "insert-item"
value = "Insert Furit"
{{action "insertItem" this.item1 this.item2 this.item3}}
/>
</ div >
< br />
< div >
< input
type = "button"
id = "list-item"
value = "Print Items"
{{action "list"}}
/>
</ div >
{{outlet}}
|
app/templates/getProperties1.hbs
HTML
< Arr >
List of Fruits:
</ Arr >
|
Output:
Ember.js Component getProperties() Method
Example 2: Type the following code to generate the route for this example:
ember generate route getProperties2
app/components/arr2.js
Javascript
import Component from '@glimmer/component' ;
import { tracked } from '@glimmer/tracking' ;
import { action } from '@ember/object' ;
import Ember from 'ember' ;
let Student = Ember.Object.extend({
firstName: null ,
lastName: null ,
init() {
alert(`${ this .get( 'Name' )} 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 Ember.Component.extend({
students: [{
Name: 'Balit' ,
skill: 'Python' ,
Id: 'stu2' ,
},
{
Name: 'Permu' ,
skill: 'PHP' ,
Id: 'stu0' ,
},
{
Name: 'Sam' ,
skill: 'R' ,
Id: 'stu1' ,
},
{
Name: 'Pokhu' ,
skill: 'JavaScript' ,
Id: 'stu3' ,
},
{
Name: 'Tanu' ,
skill: 'Java' ,
Id: 'stu4' ,
},
{
Name: 'Arabh' ,
skill: 'c++' ,
Id: 'stu5' ,
}],
@tracked
item3: 'Gulshan' ,
@tracked
item2: 'Angular' ,
@tracked
item1: 'stu6' ,
@tracked
item4: 'Sam' ,
@action
print(data1, data2, data3) {
let temp = Student.create({
Name: data1,
skill: data2,
Id: data3
});
this .students.addObject(temp);
},
@action
show() {
let temp = '' ;
this .students.map((item) =>
temp += item.Name + '\n' );
alert(temp);
}
})
|
app/components/arr2.hbs
HTML
< h3 >{{yield}}</ h3 >
< table >
< tr >
< th >Name</ th >
< th >skill</ th >
< th >Id</ th >
</ tr >
{{#each this.students as |detail|}}
< tr >
< td >{{detail.Name}}</ td >
< td >{{detail.skill}}</ 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}}
/>
< br />
< br />
< br />
< input
type = "button"
id = "list-student"
value = "List All Student"
{{action "show"}}
/>
|
app/templates/getProperties2.hbs
HTML
< Arr2 >
List of Students:
</ Arr2 >
|
Output:
Ember.js Component getProperties() Method
Reference: https://api.emberjs.com/ember/4.6/classes/Component/methods/getProperties?anchor=getProperties
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