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YouaredevelopinganASP.NETWebpagethatusesjQueryvalidation.Theusershouldenteravalidemailaddr

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YouaredevelopinganASP.NETWebpagethatusesjQueryvalidation.TheusershouldenteravalidemailaddressinatextboxthathasIDtxtEmail.Thepagemustdisplay"E-Mailaddressrequired"whentheuserdoesnotenteranaddressand"Invalide-mailaddress"whentheuserentersanaddressthatisnotformattedproperly.Youneedtoensurethattheappropriateerrormessageisdisplayedwhenthetextboxdoesnotcontainavalide-mailaddress.Whichtwocodesegmentsshouldyouadd？（）

A.

B.

C.

D.

参考答案:

参考B, D

计算机考试

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