
方法一: |
< script LANGUAGE=" JavaScript "> |
function checkvalue() { if (document.welcomeform.nickname.value == "" |
) { alert( " 昵称不能为空! " ); return ( false ); } if (document.welcomeform.password.value |
== "" ) { alert( " 密码不能为空! " ); return ( false ); } document.welcomeform.submit(); |
return ( true ); } |
</ script> |
< body> |
< form name=" welcomeform " method=" post " action=" welcome.asp "> |
< a href=" # " onclick=" javascript:checkvalue();return false: "> |
登录 |
</ a> |
</ form> |
</ body> |
方法二: |
<form name="welcomeform" method="post" action="welcome.asp"> |
<input type=text> |
</form> |
<a href="javascript:welcomeform.submit();">提交</a> |



