-
Notifications
You must be signed in to change notification settings - Fork 0
/
Backbone.js
74 lines (58 loc) · 1.93 KB
/
Backbone.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
Backbone.js
Es un gestor MVC para javascript usando jquery. Divide la estructura de la app por clases.
@@ EJEMPLO APP CALCULA AREA TRIANGULO
=== MODELO =============================================================================================>
var Rectangulo = Backbone.Model.extend({
defaults: {
alto: 4,
ancho: 3,
},
area: function() {
return this.get('alto') * this.get('ancho');
},
toTemplateJSON: function() {
var json = this.toJSON();
json.area = this.area();
return json;
}
});
=== VISTA Y CONTROLADOR =============================================================================================>
var Vista = Backbone.View.extend({
el: '#area',
events: {
"change input[name='alto']": 'onChangeAlto',
"change input[name='ancho']": 'onChangeAncho'
},
initialize: function() {
_.bindAll(this, 'render', 'onChangeAlto', 'onChangeAncho');
this.model = new Rectangulo();
this.model.on('change', this.render);
this.render();
},
onChangeAlto: function() {
var v = parseInt($("input[name='alto']", this.el).val());
this.model.set('alto', v);
},
onChangeAncho: function() {
var v = parseInt($("input[name='ancho']", this.el).val());
this.model.set('ancho', v);
},
render: function() {
$("input[name='alto']", this.el).val(this.model.get('alto'));
$("input[name='ancho']", this.el).val(this.model.get('ancho'));
var texto = Mustache.render('El área de un rectángulo de alto {{alto}} y ancho {{ancho}} es <b>{{area}}</b>', this.model.toTemplateJSON());
$('#resultado', this.el).html(texto);
},
});
===
Luego se carga la vista:
var v = new Vista();
Y el <HTML> quedaría asi:
<div id="area">
<label for="alto">Alto</label>
<input id="alto" name="alto" value="">
<label for="ancho">Ancho</label>
<input id="ancho" name="ancho" value="">
<div id="resultado" style="margin-top: 2em"></div>
</div>
Fuentes: http://elblogdepicodev.blogspot.com.es/2013/04/introduccion-y-ejemplo-de-backbonejs.html