Ember.js Ember.NativeArray addObject() Method
Last Updated :
08 Dec, 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 addObject() method is used to push the object onto the end of the array if it is not present in the list.
Syntax:
addObject( obj );
Parameters:
- obj: It is the object to add if not already present.
Return Value: receiver.
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 addObject1
app/routes/addObject1.js
Javascript
import Route from '@ember/routing/route' ;
export default class ListRoute extends Route {
list = [
"Digital Camera" ,
"Speakers" ,
"Balloons" ,
"Scissors" ,
null ,
"Table Confetti" ,
null ,
"Wine" ,
"Napkins" ,
"Party Plates" ,
null ,
"Music System" ,
"Cups" ,];
list2 = [
"Laptop" ,
"Bad" ,
"Head Phone" ,
"Bluetooth" ,
'Phone' ,
'Shoes' ,
]
item;
idx;
model() {
return this .list;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'list' , this .list);
controller.set( 'list2' , this .list2);
controller.set( 'item' , this .item);
controller.set( 'idx' , this .idx);
}
}
|
app/controllers/addObject1.js
Javascript
import Ember from 'ember' ;
import { reverseObjects, uniq, setObjects, unshiftObject }
from '@ember/array' ;
export default Ember.Controller.extend({
actions: {
clear() {
this .list.clear();
},
remove_null() {
let k = this .list.compact();
this .list.setObjects(k);
},
add_item(item) {
this .list.addObject(item);
},
Add_list() {
this .list.addObjects( this .list2);
},
check_item(data) {
let ans = this .list.find((item) => item == data);
alert(ans ? `${ans} is present in list` :
`${data} is not present in list`);
},
},
});
|
app/templates/addObject1.hbs
Javascript
{{page-title "addObject" }}
<h3>Here is a list of Items: </h3>
<ul>
{{ #each @model as |i|}}
<li>{{i}}</li>
{{/each}}
</ul>
<br />
<div>
<label>Enter Item: </label>
{{input value= this .item2}}
</div>
<div>
<input
type= "button"
id= "check-item"
value= "Check Item"
{{action "check_item" this .item2 }}
/>
</div>
<br />
<div>
<label>Enter Item: </label>
{{input value= this .item}}
</div>
<div>
<input
type= "button"
id= "insert-item"
value= "Insert Item"
{{action "add_item" this .item }}
/>
</div>
<br />
<input
type= "button"
id= "append-list"
value= "Append More Items"
{{action "Add_list" }} />
<br /><br/>
<input
type= "button"
id= "reverse_list"
value= "Remove null"
{{action "remove_null" }} />
<br /><br/>
<input
type= "button"
id= "clear"
value= "Clear"
{{action "clear" }} />
{{outlet}}
|
Output: Visit localhost:4200/addObject1 to view the output.
Ember.js Ember.NativeArray addObject method
Example 2: Type the following code to generate the route for this example:
ember generate route addObject2
app/routes/addObject2.js
Javascript
import Route from '@ember/routing/route' ;
export default class PartyRoute extends Route {
partyItems = [
'Oxygen' ,
'Tenet' ,
undefined,
'Source Code' ,
'Infine' ,
'Loopert' ,
'Tenet' ,
undefined,
'SpiderHead' ,
'The Thing' ,
undefined,
'A Quiet Place' ,
'The Invisible Man' ,
'Looper' ,
'The Thing' ,
'Ad Astra' ,
undefined,
];
list = [
'Shutter Island' ,
'Matrix' ,
'Avatar' ,
'Fantastic Beast' ,
'Avengers' ,
'Fantastic four' ,
'HulK' ,
'Superman' ,
'Spiderman' ,
'The Batman'
];
item;
idx;
model() {
return this .partyItems;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'partyItems' , this .partyItems);
controller.set( 'item' , this .item);
controller.set( 'idx' , this .idx);
controller.set( 'list' , this .list);
}
}
|
app/controllers/addObject2.js
Javascript
import Ember from 'ember' ;
import { reverseObjects, unshiftObject, uniq, }
from '@ember/array' ;
export default Ember.Controller.extend({
actions: {
delete () {
this .partyItems.clear();
},
insert(data) {
this .partyItems.addObject(data);
},
add() {
this .partyItems.addObjects( this .list);
},
remove() {
let res = this .partyItems.compact();
this .partyItems.setObjects(res)
},
check(data) {
let ans = this .partyItems.find((item) => item == data);
alert(ans ? `${ans} present in list` :
`${data} not present in list`)
}
},
});
|
app/templates/addObject2.hbs
Javascript
{{page-title "addObjecet" }}
<h3>Here is a list of items: </h3>
<ul>
{{ #each @model as |party|}}
<li>{{party}}</li>
{{/each}}
</ul>
<br />
<div>
<label>Enter Item: </label>
{{input value= this .item}}
</div>
<div>
<input
type= "button"
id= "insert-item"
value= "Insert item"
{{action "insert" this .item}}
/>
</div>
<br />
<div>
<label>Enter Item: </label>
{{input value= this .item2}}
</div>
<div>
<input
type= "button"
id= "check-item"
value= "check item"
{{action "check" this .item2}}
/>
</div>
<br />
<input
type= "button"
id= "append-list"
value= "Append More Movies"
{{action "add" }}
/>
<br />
<br />
<input
type= "button"
id= "remove-undefined"
value= "Remove undefined"
{{action "remove" }}
/>
<br />
<br />
<input
type= "button"
id= "del_list"
value= "Delate All"
{{action "delete" }} />
{{outlet}}
|
Output: Visit localhost:4200/addObject2 to view the output.
Ember.js Ember.NativeArray addObject method
Reference: https://api.emberjs.com/ember/4.4/classes/Ember.NativeArray/methods/addObject?anchor=addObject
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