Fix comment - change javascript to remote:true

app/assets/javascripts/custom.js

 $(function() {
-  $( ".favorite_add" ).on( "click", function() {
-    $.ajax({
-     url: "/jobs/favorite",
-     type: "GET",
-     data: {"job_id" : $("#job_id").val()},
-     dataType: "json",
-     success: function(data) {
-       window.location.reload();
-     }
-     });
-  });
+  // $( ".favorite_add" ).on( "click", function() {
+  //   $.ajax({
+  //    url: "/jobs/favorite",
+  //    type: "GET",
+  //    data: {"job_id" : $("#job_id").val()},
+  //    dataType: "json",
+  //    success: function(data) {
+  //      window.location.reload();
+  //    }
+  //    });
+  // });
 
   $(".favorite_remove").on("click", function() {
     $.ajax({

app/controllers/jobs_controller.rb

@@ -51,12 +51,14 @@ class JobsController < ApplicationController
   end
 
   def favorite
-    job = Job.find(params[:job_id])
+    @job_id = params[:job_id]
+    job = Job.find(@job_id)
     Favorite.new(user: current_user, job: job).save if Favorite.where(user: current_user, job: job).blank?
   end
 
   def favorite_remove
-    job = Job.find(params[:job_id])
+    @job_id = params[:job_id]
+    job = Job.find(@job_id)
     Favorite.where(user: current_user, job: job).destroy_all
   end
 

app/views/jobs/favorite.js.erb

+$("#favorite_<%= @job_id %>").remove()

app/views/jobs/favorite_remove.js.erb

+$("#favorite_remove_<%= @job_id %>").remove()

app/views/jobs/favorited_jobs.html.erb

@@ -12,13 +12,13 @@
       </thead>
       <tbody>
         <%- @favorited_jobs.each do |favorite| -%>
-          <tr>
+          <tr id="favorite_remove_<%= favorite.job.id %>">
             <td> <%= link_to favorite.job.name, job_path(favorite.job.id) %> </td>
             <td> <%= truncate(favorite.job.description, length: 250) %> </td>
             <td> <%= favorite.job.city.try(:name) %> </td>
             <td> <%= favorite.job.salary %> </td>
             <td>
-              <%= link_to 'Remove', '#', class: 'favorite_remove' %>
+              <%= link_to 'Remove', jobs_favorite_remove_path(job_id: favorite.job.id, format: 'js'), remote: true, class: 'favorite_remove' %>
               <input type="hidden" id="job_id" name="job_id" value="<%= favorite.job.id %>">
             </td>
           </tr>

app/views/jobs/index.html.erb

@@ -35,9 +35,9 @@
           <td> <%= job.salary %> </td>
           <td>
             <%- if Favorite.where(user: current_user, job: job).blank? -%>
-              <div class="col-md-3">
+              <div class="col-md-3" id="favorite_<%= job.id %>">
                 <%- if user_signed_in? -%>
-                  <%= link_to 'Favorite', '#', class: 'favorite_add' %>
+                  <%= link_to 'Favorite', jobs_favorite_path(job_id: job.id, format: 'js'), remote: true, class: 'favorite_add' %>
                 <%- else -%>
                   <%= link_to 'Favorite', new_user_session_path %>
                 <%- end -%>