用 Javascript 模拟接口

Question

谁能告诉我这种在javascript中模拟接口的方式是否正确？

$(document).on('ready', function(){
//Simulating Interfaces in Javascript using Functions with Call
var IPayable = function(){
  this.payAmount = null;
  this.payment = function(fn){return fn(this);};
  this.paymentInform = function(fn){return fn(this);};
};

var IAlertable = function(){
  this.maxPayAmount = null;
  this.maxExceeded = function(fn){return fn(this);};
};

var User = {userName: 'Adam'};

//Assigning the Interfaces
IPayable.call(User);
IAlertable.call(User);

User.payment(function(User){ //Using the first function of IPayable
  User.payAmount = 100; //Update the amount for later use
  User.maxPayAmount = 30; //Update the maximum you cannot exceed
   User.maxExceeded(function(User){ //Using the IAlertable
    if(User.payAmount > User.maxPayAmount){
      console.log(User.userName + ' your max was exceeded ' + 
                  (User.payAmount - User.maxPayAmount + '$'));
    }else{
      console.log(User.userName + ' has made a payment of: ' + User.payAmount + '$');
      User.paymentInform(function(User){ //Using the seconf function of IPayable
          console.log('Your payment of '+ User.payAmount +'$ was made');
      });  
    }
  });
});
});

这对我有用，但如果我错了，如果有人能告诉我，我会很好。

Answer 1

标准的 JavaScript 方式是 duck typing。模拟接口不应该是松散类型语言的必要条件。

您的代码使事情复杂化了很多。此外，你应该用UpperPascalCase 命名你的类，用lowerCamelCase 命名变量名，这不是一个硬性规则，而是一个被广泛接受的约定，它会让你的代码更容易被其他人阅读。