?1 < script?LANGUAGE = " JavaScript " >
?2 function ?checkvalue()
?3 {
?4 ?? if (document.welcomeform.nickname.value == "" )
?5 ?? {
?6 ???alert( " 昵稱(chēng)不能為空！ " );
?7 ??? return ( false );
?8 ???}
?9 ?? if (document.welcomeform.password.value == "" )
10 ?? {
11 ???alert( " 密碼不能為空！ " );
12 ??? return ( false );????
13 ???}
14 ??document.welcomeform.submit();?
15 ?? return ( true );???
16 }
17 </ script >
18
19 < body >
20 < form?name = " welcomeform " ?method = " post " ?action = " welcome.asp " >
21 ?? < a?href = " # " ?onclick = " javascript:checkvalue();return?false: " > 登錄 </ a >
22 </ form > ?
23 </ body >