The guide explains essential file handling in JavaScript, covering file selection, retrieval of properties, and how to efficiently upload files using FormData.
Understanding the relationship between File and Blob is crucial; while File represents individual files, Blob allows for storing and processing large binary data seamlessly.
The FileReader API facilitates reading file content, enabling operations like readAsText for text files and readAsDataURL for images, enhancing user experiences with previews.
Using createObjectURL, developers can create temporary URLs for files, allowing for easy previews of images or other media before they are uploaded.
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