srcminiBackbone.js更改的模型用于在使用set方法设置属性后更改所有已更改的属性。
句法：
model.changed让我们举个例子。
请参阅以下示例：
<!DOCTYPE html>
<head>
<title> Changed Example</title>
<script src="https://code.jquery.com/jquery-2.1.3.min.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js" type="text/javascript"></script>
<script type="text/javascript">
Player = Backbone.Model.extend({
defaults: {
p_name: 'Sachin Tendulkar', country: 'india'
}, initialize: function () {
this.bind("change:p_name", function (model) {
var name = model.get("p_name");
var ctry = model.get("country");
});
}
});
var person = new Player();
document.write("<b>Before changing the name attribute, its value is:</b> ", person.get("p_name"));
person.set({ p_name: 'Virat Kohli' });
document.write("<br><b>After changing the name attribute, its value is:</b> ", person.get("p_name"));
</script>
</head>
<body></body>
</html>输出：
将以上代码保存在changed.html文件中，然后在新的浏览器中打开该文件。
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