YouuseMicrosoft.NETFrameworkv3.5tocreatea&
YouuseMicrosoft.NETFrameworkv3.5tocreateaMicrosoftASP.NETapplicationforCertkiller.com.
Thecodesegmentbelowiswrittentocreateaclient-script
ThisnewlycreatedscriptwillmakeuseofASP.NETAJAX.ThescriptwillalsoupdatethetextofalltheLabelcontrolsinthewebform.IthascometoyourattentionthattheLabelcontrolsarenotupdatedwhentheclientscriptfunctionistested.However,youreceivethe"’null’isnullornotanobject"JavaScripterrormessageinthebrowser.
Whatshouldyoudo?()
正确答案:参考C
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