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BackboneJS - Collection Clone
Description
It returns a new instance of the collection with an identical list of models.
Syntax
collection.clone()
Example
<!DOCTYPE html> <html> <head> <title>Collection Example</title> <script src = "https://code.jquery.com/jquery-2.1.3.min.js" type = "text/javascript"></script> <script src = "https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js" type = "text/javascript"></script> <script src = "https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js" type = "text/javascript"></script> </head> <body> <script type = "text/javascript"> //'Person' is a model name var Person = Backbone.Model.extend(); //The model instance 'person' contains 'name' attribute var person = new Person ({ name: 'Sachin Tendulkar' }); var MyCollection = Backbone.Collection.extend ({ model: Person //model is override by specifying the "model" property of collection class }); var myCollection = new MyCollection(); // The clone() method uses get method to retrieve the 'name' attribute var details = myCollection.clone(person.get('name')); //The variable 'details' assigns the value for 'name' as 'M.S.Dhoni' details.name = "M.S.Dhoni"; document.write("The new instance of collection is: ",JSON.stringify(details.name)); </script> </body> </html>
Output
Let us carry out the following steps to see how the above code works −
Save the above code in the clone.htm file.
Open this HTML file in a browser.
backbonejs_collection.htm
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