jQuery CDN未在LocalHost上加载 [英] jQuery CDN is not loading on LocalHost
问题描述
我从以下地址加载了jquery cdn：
I have a jquery cdn loading from the following:
<head>
.
.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
</head>
然后在我的脚本中有我的源代码
then in the body I have my source for my script
<body>
.
.<script src="app.js"></script>
</body>
这一切都在本地，但是当我在浏览器中查看时，我在控制台中不断收到以下错误：
This is all on local, but when I view in browser I keep getting the following errors in console:
GET file://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
Uncaught ReferenceError: $ is not defined
我认为这是说jQuery函数$ ...未定义，因为CDN的GET中有错误，为什么会发生在本地？
I assume this is saying the jQuery function "$..." is undefined because there is an error in GET of the CDN, why would this be happening on local?
推荐答案
您实际上并没有在localhost（ http：// localhost ）上运行，而是在本地文件系统上运行（ file：/// path / to / whatever.html ）。该协议使用 // 链接复制到 file：//ajax.googleapis.com 当然没有'存在。
You aren't actually running on localhost (http://localhost) but on the local file system (file:///path/to/whatever.html). The protocol is copied with the // link to file://ajax.googleapis.com which of course doesn't exist.
您应该在计算机上设置服务器，以便使用http协议访问实际 localhost。它还有其它好处，因为当页面直接从文件系统加载时，浏览器的其他方面也有所不同。
You should set up a server on your computer so that you'd have an actual localhost accessed with the http protocol. It would have other benefits as well since browsers act a bit differently also in other regards when the page is loaded directly from the file system.
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