JavaScript 适配器模式（Adapter Pattern）实现示例

JavaScript 代码实现

<!DOCTYPE html>
<html>
<head>
  <title></title>
  <script type="text/javascript" src="json.js"></script>
  <script type="text/javascript" language="javascript">
    var DataSource01={};
    DataSource01.Author="Kevin";
    DataSource01.GetName=function(){
      return "Kevin";
    };
    DataSource01.GetAge=function(){
      return 35;
    };
    var DataSource02={};
    DataSource02.Author="Leo";
    DataSource02.MyName=function(){
      return "Leo";
    };
    DataSource02.MyAge=function(){
      return 25;
    };
    var DataSource03={};
    DataSource03.Author="zhihui";
    DataSource03.Name=function(){
      return "zhihui";
    };
    DataSource03.Age=function(){
      return 25;
    };
    //讲所有的放入一个数组中
    //在生成随机数后可以以下标
    var DataSources=[DataSource01,DataSource02,DataSource03];
    var DataAdapter={};
    DataAdapter.DataSource=false;
    DataAdapter.SetDataSource=function(ds){
      DataAdapter.DataSource=ds;
    };
    DataAdapter.ReturnData=function(){
      var Data={};
      Data.Author=false;
      Data.Name=false;
      Data.Age=false;
      //生成随机数
      //用来随机模拟前台的点击
      var rand=Math.random();
      rand=Math.floor(Math.random()*3);
      console.log(rand);
      console.log(DataSources[rand]);
      DataAdapter.SetDataSource(DataSources[rand]);
      if(rand==0){
        Data.Author=DataAdapter.DataSource.Author;
        Data.Name=DataAdapter.DataSource.GetName();
        Data.Age=DataAdapter.DataSource.GetAge();
      }else if(rand==1){
        Data.Author=DataAdapter.DataSource.Author;
        Data.Name=DataAdapter.DataSource.MyName();
        Data.Age=DataAdapter.DataSource.MyAge();
      }else if(rand==2){
        Data.Author=DataAdapter.DataSource.Author;
        Data.Name=DataAdapter.DataSource.Name();
        Data.Age=DataAdapter.DataSource.Age();
      }
      return Data;
    };
    function ShowData(){
      var Data= DataAdapter.ReturnData();
      alert(Data.toJSONString());
    }
    function ChooseDS01(){
      DataAdapter.SetDataSource( DataSource01);
    }
    function ChooseDS02(){
      DataAdapter.SetDataSource( DataSource02);
    }
  </script>
</head>
<body>
<input type="button" value="DataSource01" onclick="ChooseDS01()">
<input type="button" value="DataSource02" onclick="ChooseDS02()">
<input type="button" value="Show Data" onclick="ShowData()">
</body>
</html>