SAPUI5 Demokit not working in IE8

Hello everyone,

I am trying to showcase SAPUI5 Demokit (SAPUI5 SDK - Demo Kit) to my colleagues and experience it in IE8, all the controls demo are showing up fine however all the demo apps throw error - Object doesn't support this property or method in index.html file. I have to target IE8 for any web developments. I read in SAP docs that IE8 just shows visual degradation but nowhere it is written that application will stop working. Please advise if I need to stop pursuing SAPUI5 if it really doesn't work in IE8? I need to stick to IE8 at my office and it is not going away soon.