"ReplaceChildren Is Not A Function" - Touchscreen Workaround

With the release of Niagara 4.15, we have identified that older browsers do not support the replaceChildren method, as documented here:

https://developer.mozilla.org/en-US/docs/Web/API/Document/replaceChildren

You can find the supported browser versions for web viewing in the Niagara documentation:

https://docs.niagara-community.com/bundle/docN4Install/page/SupportedWebBrowsers-N4Install.html

These Chromium versions will be rolled out in new Touchscreen variants.

To work around this issue, you have two options:

• Downgrade your Niagara version to below 4.15, or
• Update Chrome via the Google Play Store.

To update Chrome on the touchscreen:

1. Exit the LinkTouch application.
2. Open System Settings.
3. Type “home”, then go to Default home applications and select Quickstep.
4. Power cycle the touchscreen.
5. Go to Settings > Apps & notifications > Play Store.
6. Log in to the Play Store.
7. Either:
   • Go to Updates or Apps, or
   • Directly search for and install the latest version of Google Chrome via the Play Store.