javascript - How to add Backbone Model global function -

i need add function models, can´t how recognize model "this" scope variable. function model can reseted defaults , data-object parameter:

backbone.model.prototype.reset = function( data ){          this.set(this.defaults);          $.each( data, function( key, value ){                this.set( key, value );         }); } 

your code seems legit. value of this defined @ runtime , depends on how call method. if use modelinstance.reset() value of this modelinstance.

however, mutating prototype of 3rd party considered bad practice should avoided. better practice create abstract model , have of model implement it.

it like:

var abstracrtmodel = backbone.model.extend({   reset: function (data, options) {     this.clear(options);     this.set(_.defaults({}, data || {}, this.defaults || {}), options);   } }); 

the api of model.set permits passing data hash, don't need inner loop.