The javascript (alert) pop-up message box in updatepanel in Ajax

The javascript (alert) pop-up message box in updatepanel in Ajax

Use response. Write ("<SCRIPT> alert ('login successful! ') </SCRIPT> "); is completely feasible.
But after the code is moved to the Ajax site, under the Action of updatepanel... when Javascript is successfully logged on to the webpage, an exception is reported. It should be translated into Chinese: the server cannot parse JavaScript and other errors, but response is in another ASPX page that is not controlled by updatepanel. write (.....); the message prompt will pop up normally...

You can use the following
Scriptmanager. registerclientscriptblock (updatepanel1, typeof (updatepanel), "test", "alert ('saved successfully! '); ", True );