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Editorial Team
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Asked: 2026-05-26T02:20:38+00:00

This code is working fine on jsFiddle but not on my system. JsFiddle I

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This code is working fine on jsFiddle but not on my system.
JsFiddle

I have checked from the draft (Pressing Ctrl + Shift + Enter on jsFiddle), added this code to head section & modified like below:

window.addEvent('load', function() {
    window.webkitRequestFileSystem(window.TEMPORARY, 2*1024*1024, function(fs) {
        fs.root.getFile('test', {create: true}, function(fileEntry) {
            alert(fileEntry.toURL());
            fileEntry.createWriter(function(fileWriter) {
                var builder = new WebKitBlobBuilder();
                builder.append("Saurabh");
                builder.append("\n");
                builder.append("Saxena");

                var blob = builder.getBlob('text/plain');

                fileWriter.onwriteend = function() {
                    // navigate to file, will download
                    location.href = fileEntry.toURL();
                };
                fileWriter.write(blob);
            }, function() {});
        }, function() {});
    }, function() {});
});
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1 Answer

  1. Editorial Team

    You get a FileError.SECURITY_ERR because you are not allowed to run this code locally. You would see the error if you didn’t have empty errorhandlers.

    You will see the error if you save the following code to a local file and run it in chrome:

    <html>
<script>
function doit() {

function errorHandler(e) {
  var msg = '';

  switch (e.code) {
    case FileError.QUOTA_EXCEEDED_ERR:
      msg = 'QUOTA_EXCEEDED_ERR';
      break;
    case FileError.NOT_FOUND_ERR:
      msg = 'NOT_FOUND_ERR';
      break;
    case FileError.SECURITY_ERR:
      msg = 'SECURITY_ERR';
      break;
    case FileError.INVALID_MODIFICATION_ERR:
      msg = 'INVALID_MODIFICATION_ERR';
      break;
    case FileError.INVALID_STATE_ERR:
      msg = 'INVALID_STATE_ERR';
      break;
    default:
      msg = 'Unknown Error';
      break;
  };

  console.log('Error: ' + msg);
}



window.webkitRequestFileSystem(window.TEMPORARY, 1024*1024, function(fs) {
        fs.root.getFile('test', {create: true}, function(fileEntry) {
            fileEntry.createWriter(function(fileWriter) {
                var builder = new WebKitBlobBuilder();
                builder.append("Saurabh");
                builder.append("\n");
                builder.append("Saxena");

                var blob = builder.getBlob('text/plain');

                fileWriter.onwriteend = function() {
                    // navigate to file, will download
                    location.href = fileEntry.toURL();
                };
                fileWriter.write(blob);
            }, errorHandler);
        }, errorHandler);
    }, errorHandler);
}
</script>

<body onload="doit();">

</body>
</html>
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