当用户导航到主屏幕时，我的应用程序的加载时间非常慢。此外，当我的学生尝试从具有严格防火墙的学区计算机使用我的应用程序时，他们经常遇到 ERR_CONNECTION_RESET 错误屏幕。我怀疑造成这些问题的一个主要原因是每个页面的头部加载了太多的 javascript 和 jquery 库。
几个月前，当我第一次开始在我的应用程序中实现 jquery 和 javascript 时，我依稀记得我应该有选择地在 application.js 中仅包含必要的 jquery 功能。现在我不再记得查找这个概念所需的词汇了。下面，我将包含由我的应用程序编译的 html 文件。如您所见，正在加载近 130 行脚本。这不太正常吧？
这是在 Chrome 的 Page Inspector 中看到的 html 文件。
<html>
<head>
<title>Miss Kohler | Mr. Z School </title>
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这是我的 application.js
//= require jquery
//= require jquery.turbolinks
//= require jquery-ui
//= require jquery_ujs
//= require bootstrap
//= require jquery.purr
//= require best_in_place
//= require turbolinks
//= require_tree .
提前感谢您提供任何见解。
最佳答案
您很可能会看到所有这些单独的脚本，因为您正在开发模式下运行服务器。根据Asset Pipeline Guide ,
In development mode, assets are served as separate files in the order they are specified in the manifest file.
当您在本地主机上运行服务器供自己使用时，这工作正常 - 但如果您有很多用户尝试连接并请求所有这些单独的文件，那就不好了。
对于面向公众的网站，您需要确保在生产模式下运行，而不是开发模式。在生产模式下，您的 javascript 和样式表应预编译为单个 javascript 文件和单个 css 文件。您可以通过运行以下命令来预编译您的 Assets :
RAILS_ENV=production bin/rails assets:precompile
然后，如果您在生产模式下启动服务器，您不应该在 <head> 中看到巨大的单独 Assets 列表。 .
RAILS_ENV=production rails server
关于javascript - 选择要加载的 javascript/jquery 库，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46757694/