Backbone.JS Length()

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The Backbone.JS Length() collection method counts the number of models in the collection. Syntax: Collection.Length Example: Example Output: Number of added numbers : 2 Explanation: In the above example, the Length() method counts the number of added models to the collection.

Backbone.JS Slice()

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The Backbone.JS Slice() collection method displays the shallow copy of the elements from the collection model. Syntax: Collection.Slice ( begin, end ) Parameters: begin: This parameter is used to specify the beginning of the element. end: This parameter is used to specify the end of the element. Example: Example Output: Number of rhyming names:3 [“Sim”,”Tim”,”Vim”] … Read more

Backbone.JS Shift()

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The Backbone.JS Shift() collection method removes the first item from the collection. Syntax: Collection.Shift ( options ) Parameters: options: This parameter is used to specify the model types. Example: Example Output: Original array:[{“id”:100,”name”:”Jim”,”age”:11},{“id”:200,”name”:”Tim”,”age”:9}] After Shift:[{“id”:200,”name”:”Tim”,”age”:9}] Explanation: In the above example, the Shift() method removes the model Student1 from the collection.

Backbone.JS Unshift()

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The Backbone.JS Unshift() collection method adds a specified model at the beginning of a collection. Syntax: Collection.Unshift ( models, options ) Parameters: models: This parameter is used to specify the models to be added to the beginning of the collection. options: This parameter is used to specify the model types. Example: Example Output: [{“id”:200,”name”:”Tim”,”age”:9},{“id”:100,”name”:”Jim”,”age”:11}] Explanation: … Read more

Backbone.JS Pop()

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The Backbone.JS Pop() collection method is used to remove the models from the collection. Syntax: Backbone.Collection.Pop ( models, options ) Parameters: models: This parameter is used to specify the models to be removed from the collection. options: This parameter is used to specify the model types. Example: Example Output: Number of numbers added: 3 Number … Read more

Backbone.JS Push()

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The Backbone.JS Push() collection method push the models to a collection, which simply means that it adds a model to the end of a collection. Syntax: Backbone.Collection.Push ( models, options ) Parameters: models: This parameter is used to specify the models to be Pushed to the collection. options: This parameter is used to specify the … Read more

Backbone.JS At()

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The Backbone.JS At() collection method retrieves a model from a collection by using a specified index. Syntax: index() Parameters: index: This parameter is used to specify the index position for the retrieval of the model from a collection. Example: Example Output: Old Students List: [{“id”:1,”name”:”Tom”},{“id”:2,”name”:”Jerry”}] New Students List: [{“id”:1,”name”:”Tom”},{“id”:2,”name”:”Jerry”},{“id”:3,”name”:”Bruno”}] Explanation: In the above example, the … Read more

Backbone.JS Get()

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The Backbone.JS Get() collection method retrieves a model from a collection by using id or Cid. Syntax: Backbone.Collection.Get (id ) Parameters: id: This parameter is used to specify the id of the model to be retrieved from the collection. Example: Example Output: Hello World! Explanation: In the above example, the Y object gets the X … Read more

Backbone.JS Set()

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The Backbone.JS Set() collection method is used to update a collection with a set of items in a model. Syntax: Backbone.Collection.Set ( models, options ) Parameters: models: This parameter is used to specify the models to be set in the collection. options: This parameter is used to specify the parameters like id, name, etc. Example: … Read more

Backbone.JS Add() collection

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The Backbone.JS Add() collection method adds a model or array of models to a collection. Syntax: Backbone.Collection.Add ( models, options ) Parameters: models: This parameter is used to specify the models to be added to the collection. options: This parameter is used to specify the model types. Example: Example Output: Number of added numbers : … Read more