Ember.js ArrayProxy removeObserver() Method

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 removeObserver() method of ArrayProxy is a method that is used to remove the registered observer of the object. This method disconnects the key and observer. 

Syntax:

this.object.removeObserver( key, target, method, sync );

Parameters: 

• key: It is the from which the observer will remove. 
• target: It is an object which is the owner of the key. 
• method: It is the which is invoked as per observer command.
• sync: It specifies whether the observer is async or not. 

Return type: Observable. 

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 test1

app/routes/test1.js

app/controllers/test1.js

app/templates/test1.hbs

Output:

👁 Image

Example 2: Type the following code to generate the route for this example:

ember generate route test2

app/routes/test2.js

app/controllers/test2.js

app/templates/test2.hbs

Output:

👁 Image

Reference: https://api.emberjs.com/ember/4.9/classes/ArrayProxy/methods/removeObserver?anchor=removeObserver