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fix: a null point exception

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This commit is contained in:
Zhicheng Wang 2017-08-21 09:05:59 +08:00
parent de34171fa2
commit 0e1fa4581a
1 changed files with 1 additions and 1 deletions
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aio/src/app/layout/doc-viewer/doc-viewer.component.ts
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@ -139,7 +139,7 @@ export class DocViewerComponent implements DoCheck, OnDestroy {
@HostListener('click', ['$event']) @HostListener('click', ['$event'])
toggleTranslationOrigin($event: MouseEvent): void { toggleTranslationOrigin($event: MouseEvent): void {
const element = findTranslationResult($event.target as Element); const element = findTranslationResult($event.target as Element);
if (element.hasAttribute('translation-result')) { if (element && element.hasAttribute('translation-result')) {
const origin = element.nextElementSibling; const origin = element.nextElementSibling;
if (!origin || origin.hasAttribute('translation-result') || origin.tagName !== element.tagName) { if (!origin || origin.hasAttribute('translation-result') || origin.tagName !== element.tagName) {
return; return;