Add optional chaining and add "const" to heading_level declaration.

Matthew Brandt · Matthew Brandt · commit 517d52f53b07 · 2025-10-13T21:41:53.000-06:00
diff --git a/doc/src/docs/assets/javascript/extra_js.js b/doc/src/docs/assets/javascript/extra_js.js
@@ -29,7 +29,7 @@ document.querySelectorAll("section.print-page p:has(+ :is(h1, h2, h3, h4, h5, h6
   if (element.innerHTML !== '@nested-dl') return
 
   let currentElement = element.nextElementSibling
-  heading_level = currentElement.tagName.startsWith("H") ? currentElement.tagName : null
+  const heading_level = currentElement?.tagName.startsWith("H") ? currentElement.tagName : null
 
   if (!heading_level) return
 
@@ -39,7 +39,7 @@ document.querySelectorAll("section.print-page p:has(+ :is(h1, h2, h3, h4, h5, h6
     }
 
     currentElement = currentElement.nextElementSibling
-    if (currentElement.tagName === heading_level) {
+    if (currentElement?.tagName === heading_level) {
       break
     }
   }

Original file line number	Diff line number	Diff line change
`@@ -29,7 +29,7 @@ document.querySelectorAll("section.print-page p:has(+ :is(h1, h2, h3, h4, h5, h6`
`29`	`29`	`if (element.innerHTML !== '@nested-dl') return`
`30`	`30`
`31`	`31`	`let currentElement = element.nextElementSibling`
`32`		`- heading_level = currentElement.tagName.startsWith("H") ? currentElement.tagName : null`
	`32`	`+ const heading_level = currentElement?.tagName.startsWith("H") ? currentElement.tagName : null`
`33`	`33`
`34`	`34`	`if (!heading_level) return`
`35`	`35`
`@@ -39,7 +39,7 @@ document.querySelectorAll("section.print-page p:has(+ :is(h1, h2, h3, h4, h5, h6`
`39`	`39`	`}`
`40`	`40`
`41`	`41`	`currentElement = currentElement.nextElementSibling`
`42`		`- if (currentElement.tagName === heading_level) {`
	`42`	`+ if (currentElement?.tagName === heading_level) {`
`43`	`43`	`break`
`44`	`44`	`}`
`45`	`45`	`}`