IE11 is coming. I just installed the developer preview version, however, If I run some of my web applications and I got the error 'WebForm_DoPostBackWithOptions' is undefined .
The error pops up when I was playing with the autopostback dropdownList.
Moreover, It looks similar issue with IE10 before.
http://www.hanselman.com/blog/BugAndFixASPNETFailsToDetectIE10CausingDoPostBackIsUndefinedJavaScriptErrorOrMaintainFF5ScrollbarPosition.aspx
Anyone know how to solve the issue??
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