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BackboneJS - Model Changed
Description
It changes all the attributes that have changed after setting the attributes using the set() method.
Syntax
model.changed
Example
<!DOCTYPE html> <html> <head> <title> Model 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> <script type = "text/javascript"> Player = Backbone.Model.extend ({ defaults: { p_name: 'sachin', country: 'india' }, initialize: function () { this.bind("change:p_name", function (model) { var name = model.get("p_name"); var ctry = model.get("country"); }); } }); var person = new Player(); document.write("<b>Before changing the name attribute, its value is:</b> ", person.get("p_name")); person.set({ p_name: 'dhoni' }); document.write("<br><b>After changing the name attribute, its value is:</b> ", person.get("p_name")); </script> </head> <body></body> </html>
Output
Let's carry out the following steps to see how above code works −
Save above code in changed.htm file.
Open this HTML file in a browser.
backbonejs_model.htm
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