How to Get Error Message for Unaccepted File Type in blueImp/jquery File Upload

If you're using the blueImp/jquery File Upload plugin on your website, you may encounter situations where users try to upload files with unaccepted file types. In such cases, it's important to provide users with clear error messages so they understand why their file upload failed.

To get an error message for unaccepted file types in blueImp/jquery File Upload, you can use the acceptFileTypes option. This option allows you to specify which file types are accepted for upload. If a user tries to upload a file with an unaccepted file type, the plugin will trigger an error message.

Here's an example code snippet that demonstrates how to use the acceptFileTypes option:


$('#fileupload').fileupload({
    acceptFileTypes: /(.|/)(gif|jpe?g|png)$/i,
    maxFileSize: 5000000, // 5 MB
    formData: {/* additional form data */}
});

In this example, we've set the acceptFileTypes option to allow only GIF, JPEG, and PNG images to be uploaded. If a user tries to upload a file with a different file type, the plugin will trigger an error message that says "File type not allowed".

You can customize the error message by using the error option. Here's an example code snippet that demonstrates how to use the error option:


$('#fileupload').fileupload({
    acceptFileTypes: /(.|/)(gif|jpe?g|png)$/i,
    maxFileSize: 5000000, // 5 MB
    error: function (jqXHR, textStatus, errorThrown) {
        if (jqXHR.status === 0) {
            alert('File upload failed.nPlease check your internet connection.');
        } else if (jqXHR.status == 413) {
            alert('File is too large.nPlease choose a smaller file.');
        } else {
            alert('File upload failed.n' + jqXHR.responseText);
        }
    },
    formData: {/* additional form data */}
});

In this example, we've customized the error message to display different messages for different error scenarios. If the file is too large, the message will say "File is too large. Please choose a smaller file." If the file upload fails for any other reason, the message will display the error message returned by the server.

By using the acceptFileTypes and error options, you can ensure that users are provided with clear error messages when they try to upload files with unaccepted file types. This can help improve the user experience on your website and reduce the number of support requests related to file uploads.

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