Phase 10 · API Integration
TopicsMultipart Form
Part of the Frontend Developer Roadmap.
Summary
The `multipart/form-data` encoding used to send files alongside regular form fields in a single HTTP request.
How to Learn This
- 1Build a form combining text fields and a file upload in one `FormData` submission.
- 2Inspect the raw request body's boundary-separated structure in DevTools.
- 3Learn why multipart encoding is necessary instead of plain JSON for file uploads.
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