clear

优质

小牛编辑

133浏览

2023-12-01

描述 (Description)

它会删除所有属性，包括骨干模型的id属性。

语法 (Syntax)

model.clear(options)

参数 (Parameters)

options - 它定义从模型中删除时使用的参数，如id，name等。

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 Model = Backbone.Model.extend();
         var model = new Model({name:"xnip", 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>