Javascript验证插入特定名称的文件

我想在Javascript中进行验证,文件名应该是特定类型的,应该上传一个例子.

我有一个fileupload控件,它具有上传multipe文件的功能.

这是html.

<asp:FileUpload runat="server" ID="flufileUpload" AllowMultiple="true" onchange="return ValidateFileType(this);" />

所以在上传时我希望用户上传特定名称的文件

喜欢：-

用户只能上传5个文件,其名称仅为

1 – > 120.jpg

2 – > 150.jpg

3 – > 180.jpg

4 – > 210.jpg

5 – > 240.jpg

如果用户上传除此之外的文件名,则应提示警报消息.

我处理一些验证的功能如下.但我无法处理文件名验证.

function ValidateFileType(controlName) {
    try {
        var uploadControl = controlName;
        var isCValidFile = false;

        for (var i = 0; i < uploadControl.files.length; i++) {
            isCValidFile = false;

            var path = uploadControl.files[i].name;
            var ext = path.substring(path.lastIndexOf(".") + 1, path.length).toLowerCase();

            if (path != "") {
                for (var j = 0; j < ValidImageFileExtension.length; j++) {
                    if (ext == ValidImageFileExtension[j]) {
                        isCValidFile = true;
                        break;
                    }
                }
                if (!isCValidFile) {
                    jAlert("Invalid File. Please upload a File with extension " + ValidImageFileExtension.join(", "), "information");
                    uploadControl.value = '';
                    isCValidFile = false;
                    break;
                }
                else if (uploadControl.files[i].size > 15728640) {
                    jAlert("Please check file size should be less than 15 MB.", "information");
                    uploadControl.value = '';
                    isCValidFile = false;
                    break;
                }
            }
            else {
                jAlert("Please select File", "information");
                isCValidFile = false;
                break;
            }
        }

        return isCValidFile;

    } catch (e) {
        isCValidFile = false;
        jAlert("Error occurred on validate file.", "Error");
        return isCValidFile;
    }
}

解决方法:

您可以使用有效文件名对象检查文件名,还需要知道哪个选项卡处于活动状态.你可以使用以下代码

var Tabtype = document.getElementById('hdnType').value; 

if (Tabtype == "Panaromic") { 
    var validFileName = { 
         "120.jpg": 1, "150.jpg": 1, "180.jpg": 1, "210.jpg": 1, "240.jpg": 1, 
    } 
} 

if (Tabtype == "Satellite") { 
    var validFileName = { 
          "55.jpg": 1, "74.jpg": 1, "83.jpg": 1, "935.jpg": 1, 
    } 
} 

if (Tabtype == "SitePlot") { 
    var validFileName = 0; 
}


if (path != "") {
   if(validFileName && !isFileNameValid(path)){
       jAlert("Invalid File. Please upload a File with extension " + 
       ValidImageFileExtension.join(", "), "information");
       uploadControl.value = '';
       isCValidFile = false;
       break;
   }
   ...