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| author | Samuel Mannehed <samuel@cendio.se> | 2022-10-12 12:39:49 +0200 |
|---|---|---|
| committer | Samuel Mannehed <samuel@cendio.se> | 2022-10-12 12:39:49 +0200 |
| commit | 4ecb44111d16048ef1ee3a7e96acb66ac9c39303 (patch) | |
| tree | 3c003f57242076104af7ddfab3d5e4b2e516fd0f | |
| parent | bdc0bbbb4fd8cd6c5471efd53e343ceb93a63ec3 (diff) | |
| download | novnc-4ecb44111d16048ef1ee3a7e96acb66ac9c39303.tar.gz | |
Check if activeElement exists before using it
According to MDN, document.activeElement can be null if there is no
focused element.
| -rw-r--r-- | app/error-handler.js | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/app/error-handler.js b/app/error-handler.js index a68fe92..675bc51 100644 --- a/app/error-handler.js +++ b/app/error-handler.js @@ -53,7 +53,7 @@ function handleError(event, err) { // Remove focus from the currently focused element in order to // prevent keyboard interaction from continuing - document.activeElement.blur(); + if (document.activeElement) { document.activeElement.blur(); } // Don't let any element be focusable when showing the error let keyboardFocusable = 'a[href], button, input, textarea, select, details, [tabindex]'; |