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todo.js
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todo.js
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/***************** MODEL ********************/
// Define a Todo Model
var Todo = Backbone.Model.extend({
// Default todo attribute values
defaults: {
title: '',
completed: false
}
});
// Instantiate the Todo Model with a title, allowing completed attribute to default to false
var myTodo = new Todo({
title: 'Check attributes property of the logged models in the console.'
});
/***************** VIEW ********************/
var TodoView = Backbone.View.extend({
tagName: 'li',
// Cache the template function for a single item.
todoTpl: _.template( $('#item-template').html() ),
events: {
'dblclick label': 'edit',
'keypress .edit': 'updateOnEnter',
'blur .edit': 'close'
},
// Called when the view is first created
initialize: function() {
this.$el = $('#todo');
// Later we'll look at:
// this.listenTo(someCollection, 'all', this.render);
// but you can actually run this example right now by
// calling TodoView.render();
},
// Re-render the titles of the todo item.
render: function() {
this.$el.html( this.todoTpl( this.model.toJSON() ) );
// $el here is a reference to the jQuery element
// associated with the view, todoTpl is a reference
// to an Underscore template and toJSON() returns an
// object containing the model's attributes
// Altogether, the statement is replacing the HTML of
// a DOM element with the result of instantiating a
// template with the model's attributes.
this.input = this.$('.edit');
return this;
},
edit: function() {
// executed when todo label is double clicked
},
close: function() {
// executed when todo loses focus
},
updateOnEnter: function( e ) {
// executed on each keypress when in todo edit mode,
// but we'll wait for enter to get in action
}
});
// create a view for a todo
var todoView = new TodoView({model: myTodo});
todoView.render();