firefox - 是否可以有选择地关闭 Firefox/Chrome 中的 CSS 或 Javascript 功能进行测试？

Question

IE 具有方便的调试功能，可让您模拟旧版本的 IE (7-10)。是否有与 Firefox/Chrome 插件类似的功能，例如，可以让您将 Chrome 转回仅具有几个版本前的功能？或者在 Firefox 中测试没有最新 Firefox 版本的 CSS 功能的站点？或者通过删除边框半径、阴影和高级 CSS 效果，而不实际更改浏览器中加载的样式表，粗略地显示站点在 IE7 中的样子？

似乎可以有效地仅在一页上删除 JS 功能 - 例如，window.ArrayBuffer = undefined会导致缺少 ArrayBuffer 功能，就像在旧浏览器中会发生的那样 - 但是是否有任何插件或 api 来编写插件，以超越“用户代理切换”并删除用于测试的功能？

Answer 1

Is there a similar feature as an addon for Firefox/Chrome that lets you, for example, turn back Chrome to only have the features it had a few versions ago?

使用名为 profiles 的功能并行安装和运行多个版本的浏览器:

Mozillazine: Using Multiple Profiles

Chromium: Creating and Using Profiles

Opera: How to make multiple profiles?

这些比 Microsoft 解决方案更具前瞻性:

Note You may be able to use legacy document modes to emulate the behavior of earlier versions. Should you choose to do this, be aware that this is a temporary solution at best. Starting with Internet Explorer 11 Preview, document modes are consider deprecated and may not be supported in any future versions of the browser. For best results, you should update your sites and apps to use features and techniques supported by industry standards and multiple browsers.

Note Starting with IE11, document modes are considered deprecated and should no longer be used. Webpages that require legacy document modes to display properly should be rewritten to use features defined by modern standards. To learn more, see Compatibility changes in IE11.

但有警告:

Chrome profiles are not backwards compatible, so storing the user profile on a network drive and using it with different versions of Chrome can cause crashes and data loss.

引用文献

Compatibility changes in IE11

IE10 Compatibility Changes

Specifying legacy document modes

When to use Legacy Document Modes

Understanding the need for document compatibility modes

HTML5 Parsing in IE10

IE 10 Compat Inspector

IE 10, HTML5 and jQuery 2.x - JavaScript runtime error: 'JSON' is undefined

Interoperable HTML Parsing in IE9

Compatibility View and 'Smart Defaults'

Chromium: Supported Directory Variables