检查邮件地址的合法?
if ((form.email.value=="")||(form.email.value.indexOf('@',0)==-1)||(form.email.value.indexOf('.',0)==-1)||(form.email.value.length<6))
{alert ("请你输入合法的email地址!"); form.email.select();form.email.focus();return false;}哪里错啦,提示email.value不是对象,可是这是书上写的呀!