超链接 Form提交前 脚本验证

<a href="javascript:void(document.forms[0].submit())" onclick="return SaveData()" value="test">


if(checkAll()==0 && checkLineBaseInfo() == 0)
{
if(document.getElementById('hidFreightId').value != null && document.getElementById('hidFreightId').value != '')
{
document.forms[0].action = 'update.rails'
}
else
{
document.forms[0].action = 'create.rails'
}
return true;
}
else
{
return false;
}