在noscript元素中加载资源 [英] Loading assets in a noscript element

问题描述

我希望标准行为是不在< noscript> 元素中加载任何资产，在FF和Chrome中快速粗略测试证明这是案件。但是，在启用脚本时是否会加载< noscript> 元素中的资源（例如图像）？

I expect the standard behavior would be to not load any assets in a <noscript> element, and a quick cursory test in FF and Chrome proves this to be the case. However, are there any situations where assets (e.g. an image) in a <noscript> element, would be loaded when scripts are enabled?

推荐答案

根据 W3规格 ：

According to W3 specifications:

NOSCRIPT元素允许作者提供备用
a脚本未执行时的内容。在以下情况下，NOSCRIPT元素的内容应仅由脚本感知用户代理呈现
：
用户代理配置为不评估脚本。用户代理
不支持文档前面的SCRIPT元素
调用的脚本语言。不支持客户端
脚本的用户代理必须呈现此元素的内容。

The NOSCRIPT element allows authors to provide alternate content when a script is not executed. The content of a NOSCRIPT element should only be rendered by a script-aware user agent in the following cases: The user agent is configured not to evaluate scripts. The user agent doesn't support a scripting language invoked by a SCRIPT element earlier in the document. User agents that do not support client-side scripts must render this element's contents.

所以我想就像你的测试一样证明：当客户支持< script> <时，< noscript> 部分内的元素将不会被渲染（即也会下载） / code> elements。

So I guess just like your testing proved: elements inside a <noscript> section will not be rendered (i.e. downloaded as well) at all when the client supports <script> elements.

我还在我的一个页面上测试了这个，它在< noscript> <中使用了一个图像/ code>部分，Chrome，FF，Opera或IE确实没有对下载图片感兴趣。

I also just tested this on a page of mine that uses an image inside its <noscript> part and neither Chrome, FF, Opera or the IE did show any interest in downloading the image.

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