fix: 空值异常

2020-10-10 00:25:22 +08:00
parent b63697f717
commit a4fa38deee
3 changed files with 6 additions and 10 deletions
--- a/src/app/view/article/article.component.ts
+++ b/src/app/view/article/article.component.ts
@@ -73,9 +73,8 @@ export class ArticleComponent implements OnInit {
            after: () => {
                //  处理锚点
                const tocList: HTMLCollection = this.divElement.nativeElement
-                    .getElementsByClassName('vditor-toc')[0]
-                    .getElementsByTagName(`a`);
-                for (let i = 0; i < tocList.length; i++) {
+                    .getElementsByClassName('vditor-toc')[0]?.getElementsByTagName(`a`);
+                for (let i = 0; i < tocList?.length; i++) {
                    const linkValue = tocList.item(i).getAttribute('href');
                    tocList.item(i).setAttribute('href', window.location.pathname + linkValue);
                }