骨干本地存储＆QUOT; undefined是不是一个函数＆QUOT; [英] Backbone Local Storage "undefined is not a function"

问题描述

我使用 Backbone.LocalStorage http://jsfiddle.net/jiewmeng/grhz9/3/

I am using Backbone.LocalStorage: http://jsfiddle.net/jiewmeng/grhz9/3/

$(function() {
    console.log(Backbone.LocalStorage); // undefined!!
    var Todo = Backbone.Model.extend({});
    var Todos = Backbone.Collection.extend({
        model: Todo,
        localStorage: new Backbone.LocalStorage("todos")
    });
});​

第1 的console.log（）给未定义。再就是在 localStorage的一个错误：... 行

未捕获类型错误：未定义不是一个函数

Uncaught TypeError: undefined is not a function

因为 Backbone.LocalStorage 预计为未定义但是为什么呢？

Expected since Backbone.LocalStorage is undefined but why?

推荐答案

的 backbone.localStorage-min.js 你加载：

<一个href=\"http://cdnjs.cloudflare.com/ajax/libs/backbone-localstorage.js/1.0/backbone.localStorage-min.js\">http://cdnjs.cloudflare.com/ajax/libs/backbone-localstorage.js/1.0/backbone.localStorage-min.js

看起来是过时的，并没有在所有的定义 Backbone.LocalStorage 。 backbone.localStorage-min.js的版本您使用的是定义 window.Store ，而不是 Backbone.LocalStorage 。如果您切换到（ http://jsfiddle.net/ambiguous/grhz9/5/ ）：

looks like it is out of date and it doesn't define Backbone.LocalStorage at all. The version of backbone.localStorage-min.js that you are using defines window.Store rather than Backbone.LocalStorage. If you switch to that (http://jsfiddle.net/ambiguous/grhz9/5/):

var Todos = Backbone.Collection.extend({
    model: Todo,
    localStorage: new Store("todos")
});

那么你可以得到过去构建托多斯集合。我不知道有多好，当你真正尝试，虽然用它的东西会工作。 太阳2011年8月14日9点53分55秒-0400是pretty永远得多，以前，在上网的时候，这样的版本是相当古老的。

then you can get past building your Todos collection. I don't know how well things will work when you actually try to use it though. "Sun Aug 14 2011 09:53:55 -0400" is pretty much forever-ago in internet time so that version is rather antique.

如果你从GitHub切换到最新版本：

If you switch to the latest version from Github:

<一个href=\"https://raw.github.com/jeromegn/Backbone.localStorage/master/backbone.localStorage-min.js\">https://raw.github.com/jeromegn/Backbone.localStorage/master/backbone.localStorage-min.js

你会看到有在JavaScript中的一些差异，一切都将开始工作，当您使用新Backbone.LocalStorage（'待办事项'）：

you'll see that there are a few differences in the JavaScript and everything will start working when you use new Backbone.LocalStorage('todos'):

http://jsfiddle.net/ambiguous/grhz9/4/

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