Get filename from input [type='file'] using jQuery

Get filename from input [type='file'] using jQuery

To get the filename from an <input type="file"> element using jQuery, you can access the files property of the input element. Here's a step-by-step guide on how to achieve this:

1. HTML Setup

First, create an HTML file input element:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Get Filename from Input</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <p id="fileName">No file selected</p> <script src="script.js"></script> </body> </html>

2. jQuery Script

In your script.js file (or within a <script> tag if you prefer), use jQuery to handle the file input change event and retrieve the filename.

script.js:

$(document).ready(function() { $('#fileInput').on('change', function(event) { // Get the file input element var input = $(this)[0]; // Check if a file has been selected if (input.files.length > 0) { // Get the file name from the FileList object var fileName = input.files[0].name; // Display the file name in the <p> element $('#fileName').text('Selected file: ' + fileName); } else { $('#fileName').text('No file selected'); } }); });

Explanation

  1. Document Ready: Ensure the script runs after the DOM is fully loaded with $(document).ready().
  2. Change Event: Bind a change event handler to the file input using $('#fileInput').on('change', ...).
  3. Access Files: Get the files property of the input element (input.files). This returns a FileList object.
  4. File Name: Retrieve the filename from the first file in the FileList object using input.files[0].name.
  5. Update Display: Update the text content of a <p> element to show the filename.

Complete Example

Here's the full HTML and JavaScript code combined:

HTML:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Get Filename from Input</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <p id="fileName">No file selected</p> <script> $(document).ready(function() { $('#fileInput').on('change', function(event) { // Get the file input element var input = $(this)[0]; // Check if a file has been selected if (input.files.length > 0) { // Get the file name from the FileList object var fileName = input.files[0].name; // Display the file name in the <p> element $('#fileName').text('Selected file: ' + fileName); } else { $('#fileName').text('No file selected'); } }); }); </script> </body> </html>

With this setup, when a user selects a file using the file input, the filename will be displayed in the <p> element. This method works in all modern browsers that support the File API.

Examples

  1. How to get the filename from a file input using jQuery?

    • Description: Extracts the filename from the file input field and displays it.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Get Filename</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <p id="fileName"></p> <script> $(document).ready(function() { $('#fileInput').change(function() { var fileName = $(this).val().split('\\').pop(); $('#fileName').text(fileName); }); }); </script> </body> </html>
      Explanation: Uses the .change() event to update the filename when a file is selected.

  2. How to handle multiple files and get their names using jQuery?

    • Description: Retrieves and displays names of multiple files selected from the file input.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Get Multiple Filenames</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput" multiple> <ul id="fileNames"></ul> <script> $(document).ready(function() { $('#fileInput').change(function() { var files = $(this)[0].files; $('#fileNames').empty(); $.each(files, function(index, file) { $('#fileNames').append('<li>' + file.name + '</li>'); }); }); }); </script> </body> </html>
      Explanation: Handles multiple file selections and lists each filename.

  3. How to get file extension from a file input using jQuery?

    • Description: Extracts the file extension from the selected file's name.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Get File Extension</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <p id="fileExtension"></p> <script> $(document).ready(function() { $('#fileInput').change(function() { var fileName = $(this).val().split('\\').pop(); var fileExtension = fileName.split('.').pop(); $('#fileExtension').text(fileExtension); }); }); </script> </body> </html>
      Explanation: Splits the filename to get the extension and displays it.

  4. How to get the full path of the selected file using jQuery?

    • Description: Retrieves and displays the full path of the file input.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Get File Path</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <p id="filePath"></p> <script> $(document).ready(function() { $('#fileInput').change(function() { var filePath = $(this).val(); $('#filePath').text(filePath); }); }); </script> </body> </html>
      Explanation: Displays the full file path, though it might be limited by browser security.

  5. How to display the file size from a file input using jQuery?

    • Description: Shows the file size in bytes of the selected file.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Get File Size</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <p id="fileSize"></p> <script> $(document).ready(function() { $('#fileInput').change(function() { var file = $(this)[0].files[0]; if (file) { $('#fileSize').text(file.size + ' bytes'); } }); }); </script> </body> </html>
      Explanation: Retrieves and displays the size of the first selected file.

  6. How to validate file type using jQuery before selection?

    • Description: Validates file type using file input events and shows a message if the file type is not allowed.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Validate File Type</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <p id="fileTypeMessage"></p> <script> $(document).ready(function() { $('#fileInput').change(function() { var file = $(this)[0].files[0]; if (file && !['image/jpeg', 'image/png'].includes(file.type)) { $('#fileTypeMessage').text('Invalid file type. Please upload a JPEG or PNG image.'); } else { $('#fileTypeMessage').text(''); } }); }); </script> </body> </html>
      Explanation: Checks if the file type is valid and shows an appropriate message.

  7. How to use jQuery to get the number of files selected in a file input?

    • Description: Counts and displays the number of files selected in the file input.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Count Files</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput" multiple> <p id="fileCount"></p> <script> $(document).ready(function() { $('#fileInput').change(function() { var fileCount = $(this)[0].files.length; $('#fileCount').text('Number of files selected: ' + fileCount); }); }); </script> </body> </html>
      Explanation: Uses .length to count the number of selected files.

  8. How to clear the file input and its filename display using jQuery?

    • Description: Clears the file input and any displayed filename or file information.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Clear File Input</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <button id="clearButton">Clear</button> <p id="fileName"></p> <script> $(document).ready(function() { $('#fileInput').change(function() { var fileName = $(this).val().split('\\').pop(); $('#fileName').text(fileName); }); $('#clearButton').click(function() { $('#fileInput').val(''); $('#fileName').text(''); }); }); </script> </body> </html>
      Explanation: Resets the file input and filename display when the clear button is clicked.

  9. How to get and display the last modified date of a file input using jQuery?

    • Description: Shows the last modified date of the selected file.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Get File Last Modified Date</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <p id="fileModifiedDate"></p> <script> $(document).ready(function() { $('#fileInput').change(function() { var file = $(this)[0].files[0]; if (file) { var lastModified = new Date(file.lastModified); $('#fileModifiedDate').text('Last Modified: ' + lastModified.toLocaleDateString() + ' ' + lastModified.toLocaleTimeString()); } }); }); </script> </body> </html>
      Explanation: Displays the last modified date and time of the selected file.

  10. How to display a preview image of a selected file using jQuery?

    • Description: Shows a preview of an image file selected in the file input.
    • Code:
      <!DOCTYPE html> <html> <head> <title>Image Preview</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <input type="file" id="fileInput"> <img id="imagePreview" style="display:none;" width="200"> <script> $(document).ready(function() { $('#fileInput').change(function() { var file = $(this)[0].files[0]; if (file && file.type.startsWith('image/')) { var reader = new FileReader(); reader.onload = function(e) { $('#imagePreview').attr('src', e.target.result).show(); }; reader.readAsDataURL(file); } else { $('#imagePreview').hide(); } }); }); </script> </body> </html>
      Explanation: Uses FileReader to create a data URL and display the image preview.

More Tags

reactor okhttp windows-phone-8 hql geom-text ieee-754 xls rest-assured automatic-ref-counting ffi

More Programming Questions

More Chemistry Calculators

More Other animals Calculators

More Animal pregnancy Calculators

More Fitness-Health Calculators