Add jQuery 4 support

README.md

@@ -4,7 +4,7 @@ jQuery! For Rails! So great.
 
 This gem provides:
 
-  * jQuery 1, 2 and 3
+  * jQuery 1, 2, 3, and 4
   * the jQuery UJS adapter
   * assert_select_jquery to test jQuery responses in Ruby tests
 
@@ -50,13 +50,20 @@ If you want to use jQuery 2, you can require `jquery2` instead:
 //= require jquery_ujs
 ```
 
-And if you want to use jQuery 3, you can require `jquery3`:
+If you want to use jQuery 3, you can require `jquery3`:
 
 ```js
 //= require jquery3
 //= require jquery_ujs
 ```
 
+And if you want to use jQuery 4, you can require `jquery4`:
+
+```js
+//= require jquery4
+//= require jquery_ujs
+```
+
 For jQuery UI, we recommend the [jquery-ui-rails](https://github.com/joliss/jquery-ui-rails) gem, as it includes the jquery-ui css and allows easier customization.
 
 *As of v3.0, jquery-rails no longer includes jQuery UI. Use the

Rakefile

@@ -30,6 +30,7 @@ task :guard_version do
   check_version('jquery.js', /jQuery JavaScript Library v([\S]+)/, 'JQUERY_VERSION')
   check_version('jquery2.js', /jQuery JavaScript Library v([\S]+)/, 'JQUERY_2_VERSION')
   check_version('jquery3.js', /jQuery JavaScript Library v([\S]+)/, 'JQUERY_3_VERSION')
+  check_version('jquery4.js', /jQuery JavaScript Library v([\S]+)/, 'JQUERY_4_VERSION')
 end
 
 desc "Update jQuery versions"
@@ -48,6 +49,7 @@ task :update_jquery do
   download_jquery('jquery', Jquery::Rails::JQUERY_VERSION)
   download_jquery('jquery2', Jquery::Rails::JQUERY_2_VERSION)
   download_jquery('jquery3', Jquery::Rails::JQUERY_3_VERSION)
+  download_jquery('jquery4', Jquery::Rails::JQUERY_4_VERSION)
   puts "\e[32mDone!\e[0m"
 end
 

lib/jquery/rails/version.rb

@@ -4,6 +4,7 @@ module Rails
     JQUERY_VERSION = "1.12.4"
     JQUERY_2_VERSION = "2.2.4"
     JQUERY_3_VERSION = "3.7.1"
+    JQUERY_4_VERSION = "4.0.0"
     JQUERY_UJS_VERSION = "1.2.3"
   end
 end