Backbone.js unshift Collection

The Backbone.js unshift Collection is used to add model at the beginning of a Collection. It takes model as the first parameter and options as the second parameter. In this article, we will discuss the Backbone.js unshift Collection. 

Syntax: 

collection. unshift( model, options );

Parameters: 

• model: This parameter is used to specify the model's instance which is going to add to the collection.
• options: This is an optional parameter regarding the model which is being added to the collection.

Example 1: In this example, we will illustrate The Backbone.js unshift collection. In this example, we will add 2 models using unshift in the collection.

Output:

Example 2: In this example, we will again add two models at beginning of the collection.

Output:

Reference: https://backbonejs.org/#Collection-unshift