元明-验证附件是否上传的案例

如下：file39是id，file39__attachmentids，是固定写法。

function validateAttachment() 
{
    var attachment = $("#file39__attachmentids").val();
    if (attachment != undefined && attachment != '')
    {
        return true;
    }
    else
    {
        alert("请上传追回借据相关凭证，再进行该操作!");
        return false;
    }
}

<tr>
    <td class="td_left">追回借据相关凭证：</td>
    <td >
        <%--上传附件--%>
        <v:attachment attachmenttype="39" id="file39"  objectid="bussTwInfo.objid" projid="bussTwInfo.objid" isupload="yes" isdelete="yes" />
    </td>
</tr>