BackboneJS - Model Clear

更新于 2025/12/4 8:38:00

描述

它从骨干模型中删除所有属性，包括 id 属性。

语法

model.clear(options)

参数

options − 它定义从模型中删除时使用的参数，如 id、name 等。

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