fix: auto-hide missing scholarships menu links

if any section, e.g. Individual Giving #angel-fund, is missing
remove it from the secondary nav
this eliminates the need to keep commenting out entries in the
nav frontmatter to stay current with what sections are shown

Author: phette23

general-info/scholarships.html

@@ -4,8 +4,8 @@
 nav: general-info
 active: Scholarships
 subnav:
-# - name: 'Additional Funding'
-#   url: '#additional-funding'
+- name: 'Additional Funding'
+  url: '#additional-funding'
 - name: Recipients
   url: '#recipients'
 - name: 'Eligibility, Criteria, & Requirements'
@@ -99,9 +99,6 @@ <h2 id="recipients">{{year}} Code4Lib Scholarship Recipients</h2>
                             {% endif %}
                         {% endfor %}
                     </dl>
-                {% else %}
-                {% comment %} remove from secondary nav (jQuery not yet on page) {% endcomment %}
-                <script>document.querySelector('.secondarynav a[href="#recipients"]').parentElement.remove()</script>
                 {% endif %}
         </div>
     </div>
@@ -147,8 +144,7 @@ <h2 id="sponsors">Made possible by the generosity of our sponsors and community<
 <div class="container-fluid">
    <div class="row">
        <div class="col-12">
-           <a name="criteria"></a>
-           <h2>Eligibility, Criteria, And Requirements</h2>
+           <h2 id="criteria">Eligibility, Criteria, And Requirements</h2>
            {% if site.data.conf.criteria.show %}
             <h3>Eligibility Criteria</h3>
            <p>
@@ -179,8 +175,7 @@ <h2>Registration Details</h2>
 <div class="container-fluid">
     <div class="row">
         <div class="col-12">
-            <a name="how-to-apply"></a>
-            <h2>How to Apply</h2>
+            <h2 id="how-to-apply">How to Apply</h2>
             {% if site.data.conf.diversity-scholarship-applications.show %}
                 <p>
                    Submit your application materials via the Code4Lib online form: <a href="{{ site.data.conf.diversity-scholarship-applications.apply-url }}">{{ site.data.conf.diversity-scholarship-applications.apply-url }}</a>
@@ -208,7 +203,9 @@ <h2>How to Apply</h2>
    </div>
 </div>
 
-{% include_relative angel-fund.html %}
+{% if site.data.conf.angel-fund.show %}
+    {% include_relative angel-fund.html %}
+{% endif %}
 
             <h2>Testimonials by Previous Awardees</h2>
                 <p>
@@ -217,3 +214,13 @@ <h2>Testimonials by Previous Awardees</h2>
                     "With the support of the Code4Lib Diversity Scholarship, I attended the Code4Lib 2022 Conference. This is the first in-person conference I have attended since the Pandemic. It is indeed exciting to regain the opportunity to meet colleagues in library technology related areas physically from other institutions in the US and other countries. I enjoyed the presentations and discussions and sensed the passion of the Code4Lib community. Through this conference, I also got the chance to know the City of Buffalo and its surrounding attractions. It is a wonderful experience to be part of the Code4Lib 2022." <b>-Grace Liu</b>
                 </p>
 </section>
+
+<script>
+// for each entry in the secondary nav, remove it if no matching section exists
+document.querySelectorAll('.secondarynav ul a').forEach(element => {
+    const sectionId = element.getAttribute('href')
+    if (sectionId && !document.querySelector(sectionId)) {
+        element.parentElement.remove()
+    }
+})
+</script>