在车型私人样性质或Backbone.js的意见的 [英] Private-like properties in models or views of Backbone.js

问题描述

是否有可能有一个模型私有财产？就像在（构造函数）函数的局部声明的变量，不附这个，但只能通过无论是在（构造）函数定义宣称本地和可见。
例如无BB查看：

Is it possible to have private properties in a model? Like the locally declared variables in a (constructor) function, not attached to this, but declared locally and visible only by whatever is defined in the (constructor)function. Example without BB View:

function MyView(aModel){

  var $internalInput = $('<input>');

  this.render: function($where){
     $internalInput.val(aModel.get('SomeProperty'));
     $where.append($('<div class="inputWraper">').append($internalInput));
  };
  this.toggleReadonly: function() {
    toggle $internalInputs readonly attribute
  }
  ...
  + Code to bind input.val to some aModel property(ies) and setup events
  ...
}

注意 internalInput 是外界无法访问和 AMODEL 也不可访问（通过MyView的至少） 。
所以，如果我想用Backbone.View执行上述MyView的，我如何做到这一点，并保持$ internalInput私人？

Note that internalInput is not accessible to outside world and aModel is also not accessible (through MyView at least). So if I want to use Backbone.View to implement the above MyView, how would i do it and keep $internalInput 'private'?

推荐答案

您应该能够通过传递IIFE到来实现私有数据扩展定义你的主干对象时，而不仅仅是一个普通的对象。例如：

You should be able to achieve private data by passing an IIFE to extend when defining your Backbone objects, rather than just a plain object. For example:

var Thing = Backbone.Model.extend((function () {
  var foo = "Private data!";

  return {
    bar: function () {
      console.log(foo);
    }
  };
})());

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