defaults
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小牛编辑
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2023-12-01
描述 (Description)
它为模型设置默认值,这意味着如果用户未指定任何数据,则模型不会使用空属性。
语法 (Syntax)
model.defaults
例子 (Example)
<!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">
var Person = Backbone.Model.extend({
defaults : {
"title": "Hello",
"description": "Welcome to xnip"
}
});
var person = new Person();
document.write(person.get('description'));
</script>
</head>
<body></body>
</html>