04. File Uploads
Introduction
Section titled “Introduction”File uploads allow users to select and submit files through web forms. The <input type="file"> element provides file selection functionality, while proper form configuration ensures files are uploaded correctly. Understanding file uploads is essential for features like profile pictures, document submission, and media uploads.
Basic File Input
Section titled “Basic File Input”<form action="/upload" method="post" enctype="multipart/form-data"> <label for="file">Choose file:</label> <input type="file" id="file" name="file"> <button type="submit">Upload</button></form>File Input Attributes
Section titled “File Input Attributes”accept
Section titled “accept”Specify file types:
<input type="file" accept="image/*"><input type="file" accept=".pdf,.doc,.docx"><input type="file" accept="image/png,image/jpeg">multiple
Section titled “multiple”Allow multiple files:
<input type="file" multiple>required
Section titled “required”Make file selection mandatory:
<input type="file" required>Form Configuration
Section titled “Form Configuration”enctype
Section titled “enctype”Use multipart encoding:
<form action="/upload" method="post" enctype="multipart/form-data"> <input type="file" name="file"> <button type="submit">Upload</button></form>Common Use Cases
Section titled “Common Use Cases”Image Upload
Section titled “Image Upload”<form action="/upload-image" method="post" enctype="multipart/form-data"> <label for="image">Select image:</label> <input type="file" id="image" name="image" accept="image/*" required> <button type="submit">Upload Image</button></form>Multiple Files
Section titled “Multiple Files”<input type="file" multiple accept=".pdf,.doc">Best Practices
Section titled “Best Practices”Specify File Types
Section titled “Specify File Types”<input type="file" accept="image/*">Use Proper Encoding
Section titled “Use Proper Encoding”<form enctype="multipart/form-data"> <!-- File upload form --></form>