Ember.js ArrayProxy replaceContent() Method
Last Updated :
26 Apr, 2025
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 replaceContent() Method of ArrayProxy is a method that is used to replace the specified objects on the content array. This method is only called if the content is not null.
Syntax:
this.object.repaceContent( idx, amt, objects );
Parameters:
- idx: It is the starting index from which content replacing starts.
- amt: It is the amount till where content will be replaced.
- objects: It is the object which is placed in place.
Return type: The return type of this method is void.
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 temp1
app/routes/temp1.js
JavaScript
import Route from '@ember/routing/route';
import { A } from '@ember/array';
import ArrayProxy from '@ember/array/proxy';
export default class List2Route extends Route {
list = ArrayProxy.create({
content: A([
'Oxygen',
'Source Code',
'Infine',
'Tenet',
'SpiderHead',
'The Thing',
'A Quiet Place',
'The Invisible Man',
'Looper',
'Ad Astra',
])
});
model() {
return this.list;
}
setupController(controller, model) {
super.setupController(controller, model);
controller.set('list', this.list);
}
}
app/controllers/temp1.js
JavaScript
import Controller from '@ember/controller';
import { action } from '@ember/object';
export default class List2Controller extends Controller {
@action
rotate(data) {
let temp = this.list.content;
this.list.replaceContent(0, temp.length, temp.reverse());
}
}
app/templates/temp1.hbs
HTML
{{page-title "ArrayProxy"}}
<h3>Here is a list of Movies: </h3>
<table>
{{#each @model as |item|}}
<tr>
<td>
<li>{{item}}</li>
</td>
</tr>
{{/each}}
</table>
<br />
<br />
<div>
<input type="button" id="rotate-item"
value="Rotate the Array" {{action "rotate" }} />
</div>
{{outlet}}
Output:
replaceContent output1
Example 2: Type the following code to generate the route for this example:
ember generate route temp2
app/routes/temp2.js
JavaScript
import Route from '@ember/routing/route';
import { A } from '@ember/array';
import ArrayProxy from '@ember/array/proxy';
export default class List2Route extends Route {
list = ArrayProxy.create({
content: A([
'python',
'javascript',
'java',
'Php',
'Angular',
'c++',
'Django',
'c',
])
});
model() {
return this.list;
}
setupController(controller, model) {
super.setupController(controller, model);
controller.set('list', this.list);
}
}
app/controllers/temp2.js
JavaScript
import Controller from '@ember/controller';
import { action } from '@ember/object';
export default class List2Controller extends Controller {
list2 = [
'SQL',
'Go',
'c#',
'Kotlin',
'R',
'Swift',
'Rust',
'Ruby',
]
@action
show(data) {
this.list.replaceContent(0, data, this.list2.slice(0, data));
}
}
app/templates/temp2.hbs
HTML
{{page-title "ArrayProxy"}}
<h3>Here is a list of languages: </h3>
<table>
{{#each @model as |item|}}
<tr>
<li>{{item}}</li>
</tr>
{{/each}}
</table>
<br />
<div>
<label>Enter Index: </label>
{{input value=this.item3}}
</div>
<br />
<div>
<input type="button" id="change-item"
value="Change till index" {{action "show" this.item3}} />
</div>
{{outlet}}
Output:
replaceContent output2
Reference: https://api.emberjs.com/ember/4.9/classes/ArrayProxy/methods/replaceContent?anchor=replaceContent