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Allow span in toc nav items

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According to https://www.w3.org/publishing/epub32/epub-packages.html#sec-package-nav-def-model:

"A child `a` element describes the target that the link points to, while a `span` element serves as a heading for breaking down lists into distinct groups (for example, a large list of illustrations can be segmented into several lists, one for each chapter)."
This commit is contained in:
John Factotum 2021-12-16 15:11:55 +08:00
parent 228d9913e0
commit 1336e51c40
1 changed files with 2 additions and 1 deletions
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3
src/navigation.js
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@ -191,7 +191,8 @@ class Navigation {
*/
navItem(item, parent) {
let id = item.getAttribute("id") || undefined;
let content = filterChildren(item, "a", true);
let content = filterChildren(item, "a", true)
|| filterChildren(item, "span", true);
if (!content) {
return;