Backbone 事件模块：listenToOnce经典案例

Backbone 事件模块：listenToOnce经典案例

例子1

var JavaBookView = Backbone.View.extend({

initialize: function() {

// 只监听一次

this.listenToOnce(this.model, "change:title", this.title);

this.listenToOnce(this.model, "change:author", this.author);

}

,title: function() {

console.log('change:title');

}

,author: function() {

console.log('change:author');

}

});

var javabookView = new JavaBookView({

model: javabook

});

// 输出：change:title change:author

javabook.set({

title : 'aaa',

author : 'bbb',

price : 0

});

// 输出：“”

javabook.set({

title : 'aaa2',

author : 'bbb2',

price : 0

});

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