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Trouble accessing Google Sheet as a TSV file

For the past few years, I've been using Sheets as a data source for a web app by using the following code to turn the id into a direct link to a TSV file:
let id="1zD3eIL8LCTJ8F_8U3kWA6k5WPJNKr_UZ_93bnARlMxQ"
let str="https://docs.google.com/spreadsheets/d/"+id+"/export?format=tsv";
var xhr=new XMLHttpRequest();
xhr.open("GET",str);
xhr.onload=function() {/* act on data */ };
xhr.send();
xhr.onreadystatechange=function(e) {
if ((xhr.readyState === 4) && (xhr.status !== 200)) {
/* Show error */
}
It still works on old files, but new ones yield a CORS error:
Access to XMLHttpRequest at 'https://doc-00-0g-sheets.googleusercontent.com/export/l5l039s6ni5uumqbsj9o11lmdc/5filqetsf3ohbeiq2e8vbtf8ik/1593267040000/112894833168181755194/*/1zD3eIL8LCTJ8F_8U3kWA6k5WPJNKr_UZ_93bnARlMxQ?format=tsv' (redirected from 'https://docs.google.com/spreadsheets/d/1zD3eIL8LCTJ8F_8U3kWA6k5WPJNKr_UZ_93bnARlMxQ/export?format=tsv') from origin 'https://viseyes.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Works: www.viseyes.org/scale?1LSnAM3A62AQipZfqxDtlOjt4MWJ0fBP22cdyqJqEj5M
Error: www.viseyes.org/scale?1zD3eIL8LCTJ8F_8U3kWA6k5WPJNKr_UZ_93bnARlMxQ

I believe your goal as follows.
You want to retrieve the data with TSV format from the Google Spreadsheet using Javascript.
Your spreadsheet is publicly shared.
For this, how about this answer?
Issue and workaround:
I could confirm the same situation from your question. Unfortunately, I couldn't remove this error. So, in this case, as a workaround, I would like to propose to use Web Apps created by Google Apps Script as the wrapper. By this, the error can be removed. The flow of this workaround is as follows.
Request to Web Apps from Javascript.
At Web Apps, the data is retrieved from "https://docs.google.com/spreadsheets/d/"+id+"/export?format=tsv".
Return the data with the TSV format from Web Apps.
Usage:
Please do the following flow.
1. Create new project of Google Apps Script.
Sample script of Web Apps is a Google Apps Script. So please create a project of Google Apps Script.
If you want to directly create it, please access to https://script.new/. In this case, if you are not logged in Google, the log in screen is opened. So please log in to Google. By this, the script editor of Google Apps Script is opened.
2. Prepare script.
Please copy and paste the following script (Google Apps Script) to the script editor. This script is for the Web Apps.
function doGet() {
let id = "1zD3eIL8LCTJ8F_8U3kWA6k5WPJNKr_UZ_93bnARlMxQ"; // This is from your script.
let str = "https://docs.google.com/spreadsheets/d/"+id+"/export?format=tsv"; // This is from your script.
const value = UrlFetchApp.fetch(str);
return ContentService.createTextOutput(value.getContentText());
}
If your Google Spreadsheet is not publicly shared, please modify as follows.
function doGet() {
let id = "1zD3eIL8LCTJ8F_8U3kWA6k5WPJNKr_UZ_93bnARlMxQ"; // This is from your script.
let str = "https://docs.google.com/spreadsheets/d/"+id+"/export?format=tsv"; // This is from your script.
const value = UrlFetchApp.fetch(str, {headers: {authorization: "Bearer " + ScriptApp.getOAuthToken()}});
return ContentService.createTextOutput(value.getContentText());
// DriveApp.getFiles() // This is used for automatically detecting the scope.
}
3. Deploy Web Apps.
On the script editor, Open a dialog box by "Publish" -> "Deploy as web app".
Select "Me" for "Execute the app as:".
By this, the script is run as the owner.
Select "Anyone, even anonymous" for "Who has access to the app:".
In this case, no access token is required to be request. I think that I recommend this setting for your goal.
Of course, you can also use the access token. At that time, please set this to "Anyone". And please include the scope of https://www.googleapis.com/auth/drive.readonly and https://www.googleapis.com/auth/drive to the access token. These scopes are required to access to Web Apps.
Click "Deploy" button as new "Project version".
Automatically open a dialog box of "Authorization required".
Click "Review Permissions".
Select own account.
Click "Advanced" at "This app isn't verified".
Click "Go to ### project name ###(unsafe)"
Click "Allow" button.
Click "OK".
Copy the URL of Web Apps. It's like https://script.google.com/macros/s/###/exec.
When you modified the Google Apps Script, please redeploy as new version. By this, the modified script is reflected to Web Apps. Please be careful this.
4. Run the function using Web Apps.
When you use this, please modify your Javascript script as follows and test it.
From:
let id="1zD3eIL8LCTJ8F_8U3kWA6k5WPJNKr_UZ_93bnARlMxQ"
let str="https://docs.google.com/spreadsheets/d/"+id+"/export?format=tsv";
To:
let str = "https://script.google.com/macros/s/###/exec";
Note:
When you modified the script of Web Apps, please redeploy the Web Apps as new version. By this, the latest script is reflected to the Web Apps. Please be careful this.
In my environment, I could confirm that when above workaround is used, no error occurs and the data with the TSV format can be retrieved.
References:
Web Apps
Taking advantage of Web Apps with Google Apps Script

Automation server can't create object: ActiveXObject creation error

I have a very simple javascript code in oracle procedure which us used for fetching the Username for Active Directory as my application don't have any user interface.
htp.p('function disp_alert()');
htp.p('{');
htp.p('var WinNetwork = new ActiveXObject("WScript.Network")');
htp.p(' WinNetwork = WinNetwork.UserName');
htp.p('alert(WinNetwork)');
htp.p('}');
It throws exception ActiveXObject creation error: Automation server can't create object
I tried changing browser setting script ActiveX controls marked safe for scripting to enable and it worked.
But in my case the application is accessed by users in client network and we can't tweak security settings for each machine in network. Can anyone suggest an alternative solution or any other method for fetching the windows username?

If you absolutely have to use WScript.Shell for whatever you want to accomplish, you may set the option for your intranet zone by GPO.
You may find the corresponding GPO setting with the help of that site: https://getadmx.com/?Category=InternetExplorer&Policy=Microsoft.Policies.InternetExplorer::IZ_PolicyScriptActiveXMarkedSafe_3

Not able to run xsjs file, error: site can't be reached

I am using office network to learn SAP HANA, to connect to HANA system I have to first connect to VPN then only the HANA system gets online. I configured a simple project XS application but when I try to run it, it shows the below error :
hana01’s server DNS address could not be found.
The URL which gets generated is https://hana01:4300/SampleXSapp/main.xsjs
I have no idea from where it is picking up "hana01:4300"
The online tutorial had port 8000 for running it
If I disconnect from VPN, then my HANA system goes down and the icon changes to gray from green.
I am attaching files and screenshot in case, you may check it what is wrong with any piece of code. Also please tell me if I had to make some changes in the Network to resolve this particular error.
My file main.xsjs:
$.response.contentType = "text/html";
var output;
output = "Hello World! This is a demo of simple SAP HANA Extended Services Application. Stay tuned to learn more.";
$.response.setBody(output);
My .xsaccess file:
{
"exposed" : true,
"authentication" : [{ "method": "Basic" }]
}
.xsapp file has no content.
My HANA System:
I made same program in HANA Cloud platform there I can run my system,
Please advice on how to get this resolved, thanks in advance.

In HANA Studio, if you right click on the connection name (H01), then hit "Properties", you will see the address used for the XS engine under "XS Properties".
This is the address used when you hit the run button in HANA Studio from what I understood.
I recommend you to change it with the IP address (172.30.170.00), as you might not have "HANA01" mapped properly in your host file.
The port 4300 is the default one used for HTTPS when your instance id is 00, which is your case. And HTTP is 8000.
But this is for HANA XS Classic as XS Advanced uses different ports.
You can always adapt the URL address generated while running you xsjs file from HANA Studio and the get the proper one to fix the "XS Properties".
Hope this helps

Deleting the file from client PC after upload but only after client permission

I got a requirement from client to delete file from his local pc after upload. It should ask to user if he want to delete the file after successful upload. If user opted yes then file should be deleted from client pc.
I know this is not easy to achieve in web application while quite easy in desktop app.My client is upgrading from desktop app to web and expecting the same behavior.
I heard that any browser plugin or small utility installed on client machine can do that. I have seen few example in other website that client is referring.
Can someone please suggest me the plugin or utility logic that can help me to achieve this? And how we can interact with these stuff from our java script or code.
Thanks in advance.
Regards,
Krishan

Javascript/HTML5 alone can't do this, it's restricted to maintain a certain level of security. You will have to look into activeX plugins, and it will only work if the user runs the web app on IE.
Here is a short example:
<script type="text/javascript">
// initialize ActiveXObject with Scripting.FileSystemObject:
var activeX_FileSystemObject = new ActiveXObject("Scripting.FileSystemObject");
if(confirm("Delete file?"))
{
activeX_FileSystemObject.DeleteFile("C:\\myFolder\\myFile.txt", true);
}
// Another way (multiple files in a catalog):
if(confirm("Delete file?"))
{
activeX_FileSystemObject.DeleteFile("C:\\myFolder\\*.txt", true);
}
activeX_FileSystemObject = null;
</script>
It's also possible that a Chrome plugin can do the same as the activeX, but never coded one myself - and it's also Chrome spesific.

Javascript Access to File on local machine

I want to open the files located on local drive using window.open().
When i try to access the file using window.open i am getting error "Access is denied."
Would somebody help to achieve this requirement in Internet explorer 8.0?
Thanks!

You can't. And thank God for that. Imagine how insecure the internet would've been if JS was able to access a client's file-system.
Of course, IE8 has the MS specific JScript superset (ActiveXObject), which does enable filesystem access:
var fileHandle,
fs = new ActiveXObject("Scripting.FileSystemObject");
fileHandle = fs.OpenTextFile("C:\\path\\to\\file.tmp", 1, true);
fileHandle.Write('This is written to a file');
console.log(fileHandle.ReadLine());//will log what we've just written to the file
But this is non-standard, is - I think- no longer supported either, and doesn't work X-browser.
Here's the documentation. At the bottom there's a link to a more detailed overview of the properties and methods this object has to offer, as you can see, there's a lot to choose from

I'm adding this answer just to be complete, but so far as Web Pages go, Elias Van Ootegem's answer is correct: you can't (and shouldn't be able to) get to the local hard drive.
But .. you can isf your page is an HTA (HTML Application) :
HTML Application wiki
This is essentially a web page with .hta as the extension(usually) and some extra tags to tell IE that it's an HTA application, not a web page.
This is something that runs via the windows operating system and is so far as I'm aware only available for IE. The HTA application opens as a web page in IE, but without the usual web navigation / favourites toolbars etc.
Note that if you have a page on an internet server delivered as an HTA application, you're likely to cause virus scanners and firewalls to pop up because this would essenstially be running a script whcih could do manything to your computer. Not good for general internert stuff at all, but might be useful in a secure environment like an intranet where the source of the application is known to be safe.
To get to the file system, you can use javascript code like this :
// set up a Fils System Object variable..
var FSO = new ActiveXObject("Scripting.FileSystemObject");
// function to read a file
function ReadFile(sFile) {
var f, ts;
var s="";
if(FSO.FileExists(sFile))
{
f = FSO.GetFile(sFile);
ts = f.OpenAsTextStream(ForReading, TristateUseDefault);
if (!ts.AtEndOfStream) {s = ts.ReadAll( )};
ts.Close( );
}
return s;
}
alert(ReadFile("c:\\somefilename.txt");