BackboneJS View

gistfile1.js

// render() function is a no-op (an empty function).
// Your view should call this function whenever the view needs to be redrawn.
var UserView = Backbone.View.extend(
    initialize: function(){
        /* ... */
    }
    render: function(){
        /* ... */
    }
);

var TodoView = Backbone.View.extend({
    template: _.template($("#todo-template").html()),
    render:function(){
        $(this.el).html(this. template(this.model.toJSON()));
        return this;
    }
});

this.model points to a model’s instance and is passed through to the view upon instantiation.
The model's toJSON() function essentially returns the model's raw attributes, ready for the template to use.
new Todo View({model: new Tool});