BackboneJS - Model Changed
描述
它更改使用 set() 方法设置属性后已更改的所有属性。
语法
model.changed
示例
<!DOCTYPE html>
<html>
<head>
<title> Model 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',
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: 'dhoni' });
document.write("<br><b>After changing the name attribute, its value is:</b> ",
person.get("p_name"));
</script>
</head>
<body></body>
</html>
输出
让我们执行以下步骤来查看上述代码的工作原理 −
将上述代码保存在 changed.htm 文件中。
在浏览器中打开此 HTML 文件。
backbonejs_model.html
