BackboneJS 模型清除
2018-01-05 11:35 更新
描述
它從骨干模型中刪除所有屬性，包括id屬性。
語法model.clear(options)
model.clear(options)
參數(shù)
options：定義從模型中刪除時(shí)使用的id，name等參數(shù)。
例<!DOCTYPE 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 Model = Backbone.Model.extend();
var model = new Model({name:"w3cschool", id:1});
document.write("<b>Before using clear, name: </b>", model.get('name'));
document.write("<b>Before using clear, id: </b>", model.get('id'));
document.write("<br>");
model.clear();
document.write("<b>After using clear, name:</b> ", model.get('name'));
document.write("<b>After using clear, id: </b>", model.get('id'));
</script>
</head>
<body></body>
</html>
<!DOCTYPE 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 Model = Backbone.Model.extend();
var model = new Model({name:"w3cschool", id:1});
document.write("<b>Before using clear, name: </b>", model.get('name'));
document.write("<b>Before using clear, id: </b>", model.get('id'));
document.write("<br>");
model.clear();
document.write("<b>After using clear, name:</b> ", model.get('name'));
document.write("<b>After using clear, id: </b>", model.get('id'));
</script>
</head>
<body></body>
</html>
輸出
讓我們執(zhí)行以下步驟，看看上面的代碼如何工作：- 將上面的代碼保存在clear.htm文件中。
- 在瀏覽器中打開此HTML文件。
Before using clear, name: w3cschoolBefore using clear, id: undefined
After using clear, name: undefinedAfter using clear, id: undefined
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