yetangitu/epub.js
1
0
Fork 0
mirror of https://github.com/futurepress/epub.js.git synced 2025-10-05 15:32:55 +02:00
Code Issues Releases Wiki Activity

Get the OL element, null check on item

Browse source
This commit is contained in:
niels 2020-08-21 14:28:27 +02:00
parent 7297af051b
commit ef588a5fd5
1 changed files with 9 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

17
src/navigation.js
View file

@ -149,17 +149,14 @@ class Navigation {
*/ */
parseNav(navHtml){ parseNav(navHtml){
var navElement = querySelectorByType(navHtml, "nav", "toc"); var navElement = querySelectorByType(navHtml, "nav", "toc");
var navItems = navElement ? qsa(navElement, "li") : [];
var length = navItems.length;
var list = []; var list = [];
if(!navItems || length === 0) return list;
if (!navElement) return list; if (!navElement) return list;
if (!navElement.children) return list;
if (!navElement.children[0]) return list;
list = this.parseNavList(navElement.children[0]); let navList = filterChildren(navElement, "ol", true);
if (!navList) return list;
list = this.parseNavList(navList);
return list; return list;
} }
@ -176,7 +173,11 @@ class Navigation {
if (!navListHtml.children) return result; if (!navListHtml.children) return result;
for (let i = 0; i < navListHtml.children.length; i++) { for (let i = 0; i < navListHtml.children.length; i++) {
result.push(this.navItem(navListHtml.children[i], parent)); const item = this.navItem(navListHtml.children[i], parent);
if (item) {
result.push(item);
}
} }
return result; return result;