- BackboneJS Tutorial
- BackboneJS - Home
- BackboneJS - Overview
- BackboneJS - Environment Setup
- BackboneJS - Applications
- BackboneJS - Events
- BackboneJS - Model
- BackboneJS - Collection
- BackboneJS - Router
- BackboneJS - History
- BackboneJS - Sync
- BackboneJS - View
- BackboneJS - Utility
- BackboneJS Useful Resources
- BackboneJS - Quick Guide
- BackboneJS - Resources
- BackboneJS - Discussion
BackboneJS - Collection Get
Description
It is used to retrieve the model from a collection by using the id or cid.
Syntax
collection.get(id)
Parameters
id − It is used to get the model from the collection.
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"> var MyCollection = new Backbone.Collection(); //The on() method binds callback function to 'MyCollection' instance and invokes whenever //an event triggers MyCollection.on("change:title", function(model) { //When event triggers, it retrieves the title from the collection document.write("Hello... " + model.get('title')); }); MyCollection.add({id: 2}); //adds id value as 2 in the collection //The 'myvalues' object gets the 'MyCollection' with id = 2 var myvalues = MyCollection.get(2); //Sets the value for the title myvalues.set('title', 'Welcome to TutorialsPoint'); </script> </body> </html>
Output
Let us carry out the following steps to see how the above code works −
Save the above code in the get.htm file.
Open this HTML file in a browser.
backbonejs_collection.htm
Advertisements