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BackboneJS - Collection Initialize
Description
When the model instance is created, it is invoked by defining the initialize function when the collection is created.
Syntax
new Backbone.Collection(models, options)
Parameters
models − It specifies the initial array of models.
options − These are the collection types attached to the collection directly by the passing model object.
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"> //The model 'MyTeam' contains default values and extended using the //Backbone.Model class var MyTeam = Backbone.Model.extend ({ defaults: { player: "sachin", country: "india" }, //The model instance is invoked by defining initialize function initialize: function() { document.write("Welcome to TutorialsPoint!!!"); } }); //The 'MyTeam1' is a collection instance and model 'MyTeam' is specified by //overriding the 'model' property var MyTeam1 = Backbone.Collection.extend ({ model: MyTeam }); var player1 = new MyTeam ({ player: "sehwag", country: "india" }); //The 'player1' is a type of collection by passing model object in the collection var myval = new MyTeam1([player1]); //The 'myval.models' define the array of models inside the collection document.write("<br>"+JSON.stringify(myval.models)); </script> </body> </html>
Output
Let us carry out the following steps to see how the above code works −
Save the above code in the initialize.htm file.
Open this HTML file in a browser.
backbonejs_collection.htm
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