批量上传文件时，js验证文件名不能相同

$("[type='submit']").click(function () {
   alert(CompareVal(GetVal()));
});

function GetVal() {//将所有文件上传文本框的文件名添加到数组
    var arrVal = new Array();
    for (var i = 1; i < 11; i++) {
    var temp = $("[name='FileUpload" + i + "']").val();//获取文本框内的文件路径的字符串
        if (temp != "") {
            var ind = temp.lastIndexOf('\\');//获取字符串中最后一个"\"的序号
            temp=temp.substring(ind+1, temp.length);//截取文件名
            arrVal.push(temp);
        }
    }
    return arrVal;
}


/*
如果有相同文件名则返回false
参数是文件名称的数组
循环比对文件名称
*/
function CompareVal(fnList) {
    var flag = true;
    for (var i = 0; i < fnList.length; i++) {
        for (var j = i+1 ; j < fnList.length; j++) {
            if (fnList[i] == fnList[j]) {
                flag = false;
                alert("第" + (i + 1) + "个上传文件与第" + (j + 1) + "个上传文件的名称相同，请修改其中一个文件名后上传！");
                return flag;
            }
        }
    }
    return flag;
}

html代码：

   <form action="/ElectronicMain/Edit" enctype="multipart/form-data" method="post">
    <div>
        <table class="edit">
            <tr>
                <td class="t ">
                    文档类型<span class="asterisk">＊</span>
                </td>
                <td colspan="3">
                    <select class="combobox" id="DocumentGenre" name="ElectronicMainModel.DocumentGenre"><option value="">请选择</option>
<option selected="selected" value="CIQ">CIQ/卫生证书</option>
<option value="QS">QS/质检报告</option>
<option value="DO">送货单据</option>
</select>
                </td>
            </tr>
            
            
            <tbody id="CIQ">
                <tr>
                    <td class="t ">
                        CIQ号<span class="asterisk">＊</span>
                    </td>
                    <td>
                        <input id="CIQNo" maxlength="50" name="ElectronicMainModel.CIQNo" type="text" value="" />
                    </td>
                    <td class="t">
                        品牌
                    </td>
                    <td>
                        <input id="Brand" maxlength="100" name="ElectronicMainModel.Brand" type="text" value="" />
                    </td>
                </tr>
                <tr>
                    <td class="t ">
                        产品
                    </td>
                    <td>
                        <input id="Product" maxlength="50" name="ElectronicMainModel.Product" type="text" value="" />
                    </td>
                    <td class="t">
                        生产日期
                    </td>
                    <td>
                        <input autocomplete="off" class="calendar" id="ProductDate" name="ElectronicMainModel.ProductDate" options="{}" type="text" value="" />
                    </td>
                </tr>
            </tbody>
            
            <tr>
                <td class="t ">
                    上传文件1
                </td>
                <td>
                    <input name="FileUpload1" type="file" />
                </td>
                <td class="t ">
                    上传文件2
                </td>
                <td>
                    <input name="FileUpload2" type="file" />
                </td>
            </tr>
            <tr>
                <td class="t ">
                    上传文件3
                </td>
                <td>
                    <input name="FileUpload3" type="file" />
                </td>
                <td class="t ">
                    上传文件4
                </td>
                <td>
                    <input name="FileUpload4" type="file" />
                </td>
            </tr>
            <tr>
                <td class="t ">
                    上传文件5
                </td>
                <td>
                    <input name="FileUpload5" type="file" />
                </td>
                <td class="t ">
                    上传文件6
                </td>
                <td>
                    <input name="FileUpload6" type="file" />
                </td>
            </tr>
            <tr>
                <td class="t ">
                    上传文件7
                </td>
                <td>
                    <input name="FileUpload7" type="file" />
                </td>
                <td class="t ">
                    上传文件8
                </td>
                <td>
                    <input name="FileUpload8" type="file" />
                </td>
            </tr>
            <tr>
                <td class="t ">
                    上传文件9
                </td>
                <td>
                    <input name="FileUpload9" type="file" />
                </td>
                <td class="t ">
                    上传文件10
                </td>
                <td>
                    <input id="File10" name="FileUpload10" type="file" />
                </td>
            </tr>
        </table>
    </div>
    <div class="edit_btn">
        <input type="submit" url="/ElectronicMain" value="提交" />
        &nbsp;
        <input id="btnreturn" name="btnreturn" type="button" url="/ElectronicMain" value="返回" />
    </div>
    </form>