Correct way of binding multiple attribute changes to a Backbone.js model
As of Backbone.js 0.9.0, the bind() function (which has been renamed to on()) supports a space-delimited list of events:
model.on("change:title change:author", ...)// equivalent tomodel.bind("change:title change:author", ...)
I don't know if such a "bulk-bind" function exists (you could open a feature request for it, it seems useful).
You can bind them separately:
var Mine = Backbone.Model.extend({ initialize: function() { var listener = function() { console.log('changed'); }; this.bind("change:attribute_1", listener); this.bind("change:attribute_2", listener); }});Or you can listen to all changes (and then filter in the listener):
var Mine = Backbone.Model.extend({ initialize: function() { var listener = function() { console.log('changed'); }; this.bind("change", listener); }});