什么是中的骨干模型初始化和构造函数之间的区别 [英] What's the difference between initialize and constructor on a backbone model

问题描述

有什么中的骨干模型初始化和构造函数之间的区别。

当我向骨干模型（ParentModel）我用initialize方法设置任何默认属性。但每当我创建一个基于ParentModel模型我使用构造函数运行任何intial功能。我这样做是因为它的工作原理，但有人在工作，问我为什么同时使用初始化和构造函数，我没有一个很好的答案除了它的作品。我可以花时间阅读，虽然源$ C ​​$ C弄明白，但它似乎更容易在这里问，并得到正确的答案。

  VAR ParentModel = Backbone.Model.extend（{
  初始化：功能（）{
    // code在这里
  }，
}）;
VAR模型= ParentModel.extend（{
  构造：功能（选件）{
    Backbone.Model.prototype.constructor.call（这一点，选择）;
    // code在这里
   }，
 

解决方案

构造运行之前骨干设立的结构。 初始化被称为结构的构造函数内。所以基本上，如果你需要之前骨干建立结构来增加任何东西，使用构造如果你需要骨干建立结构使用后增加任何初始化。

（从主体一个 Github上讨​​论）

What's the difference between initialize and constructor on a backbone model.

When I extend a backbone model (ParentModel) I use the initialize method to set any default properties. But whenever I create a Model based on the ParentModel I use the constructor to to run any intial functionality. I do this because it works but someone at work asked me why I use both initialize and constructor and I didn't have a good answer apart from it works. I could spend time reading though the source code to figure it out but it seemed much easier to ask here and get the right answer.

var ParentModel = Backbone.Model.extend({
  initialize : function() {
    // code here
  },
});


var Model = ParentModel.extend({
  constructor : function (options) {
    Backbone.Model.prototype.constructor.call(this, options);
    // code here
   },

解决方案

constructor runs before Backbone sets up the structure. initialize is called inside the structure's constructor function. So basically if you need to augment anything before Backbone sets up the structure, use constructor if you need to augment anything after Backbone sets up the structure use initialize.

(from a Github discussion on the subject)

这篇关于什么是中的骨干模型初始化和构造函数之间的区别的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！