Looking for guidance on how to use jQuery to read the current value of a drop-down list and hide a specific link based on that value.
The drop-down list is for selecting the language/locale. For example, when "English" is selected, I want the link to be hidden. However, if "French" is selected, the link should remain visible.
Could someone demonstrate how this can be achieved? Eager to learn. Thank you!
Consider the following solution:
function toggleLanguageLink() {
if ($('#language-choice').val() == 'english') {
$('#link-to-translate').hide();
} else {
$('#link-to-translate').show();
}
}
$(function() {
// hide/show the link based on current language selection
toggleLanguageLink();
// update link visibility when language is changed (useful for dynamic pages)
$('#language-choice').change(toggleLanguageLink);
});
The final code version that worked for me based on the first answer and additional hints from the author includes a compact form without any styling. This code is for the main page in the index.html.erb file of the test application:
<h2 id='main_header'>Showing/hiding link based on dropdown selection</h2>
<table>
<thead>
<th>Action</th>
<th>Skip assessment</th>
<th>Reason for skipping</th>
</thead>
<tbody>
<tr>
<td>
<%= link_to 'Start asseement', url_for(controller: :home, action: :start_assessment), id: 'start_assessment' %>
</td>
<td>
<%= select_tag "skip_option", options_for_select([ "Yes", "No" ], "No"), id: "skip_option", onchange: "reason_picker()" %>
</td>
<td>
<%= text_field_tag "reason_for_skipping", nil, size: 50, placeholder: 'Enter reason here...' %>
</td>
</tr>
</tbody>
</table>
<script type="text/javascript">
$(document).ready (
window.reason_picker = function () {
var selected = document.getElementById("skip_option").selectedIndex;
if (selected == 0) {
$("#reason_for_skipping").show();
$("#start_assessment").hide();
}
else {
$("#reason_for_skipping").hide();
$("#start_assessment").show();
}
}
);
</script>
The start assessment page simply contains a title and back link to the main page, located in the start_assessment.html.erb file:
<h1>Assessment</h1>
<%= link_to 'Back', :back %>
For reference, here is the home_controller.rb file which includes the index and start_assessment methods:
class HomeController < ApplicationController
def index
end
def start_assessment
end
end
Finally, the route.rb file has the following routes:
Rails.application.routes.draw do
root controller: 'home', action: :index
get 'start_assessment' => 'home#start_assessment'
end
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