Backbone.js的 - 传递参数的构造函数，通过 [英] Backbone.js - passing arguments through constructors

问题描述

情景：结果
我得到了一个警报（）说未定义当我（尝试）设置 myVar的通过构造函数的变量。但是如果我取消注释 myVar的是这样的MyView的生活里面，该警报则不用说你好从内，正如人们所期望的。

问：结果
这是否意味着我不能设置任何PARAMS在视图中，除了骨干网构造自己的参数，可以如模式，集，报， ID ，的className ＆安培; 标签名？结果
的手动：<一href=\"http://documentcloud.github.com/backbone/#View-constructor\">http://documentcloud.github.com/backbone/#View-constructor

的code：

  VAR MyView的= Backbone.View.extend（{    // myVar的：你好从内'，    初始化：功能（）{
        警报（this.myVar）;
    }
）};新的MyView的（{myVar的：你好从外面'}）;
 

解决方案

选项传递到构造函数会被自动存储为 this.options

  VAR MyView的= Backbone.View.extend（{  myVar的：你好从内'，  初始化：功能（）{
      警报（this.options.myVar）;
  }
）};新的MyView的（{myVar的：你好从外面'}）;
 

Scenario:
I got an alert() saying undefined when I (try to) set the myVar variable through the Constructor. However if I uncomment the myVar that's living inside the myView, the alert then instead says "Hello from inside", just as one would expect.

Question:
Does this mean that I cannot set any params in the constructor of the view except backbones own params, such as model, collection, el, id, className & tagName?
Manual: http://documentcloud.github.com/backbone/#View-constructor

The code:

var myView = Backbone.View.extend({

    //myVar : 'Hello from inside',

    initialize: function() {
        alert(this.myVar);
    }
)};

new myView({myVar: 'Hello from outside'});

解决方案

Options passed into the constructor are automatically stored as this.options

var myView = Backbone.View.extend({

  myVar : 'Hello from inside',

  initialize: function() {
      alert(this.options.myVar);
  }
)};

new myView({myVar: 'Hello from outside'});

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