Hướng dẫn file to binary javascript
The This example
reads an image as a binary file and creates an 8-bit unsigned integer array from the raw bytes. Note that this will not decode the image and read the pixels. You will need a png decoding library for that. You can also read a binary file as a
Receiving binary data in older browsersThe
The magic happens in line 5, which overrides the MIME type, forcing the browser to treat it as plain text, using a user-defined character set. This tells the browser not to parse it, and to let the bytes pass through unprocessed.
The example above fetches the byte at offset See downloading binary streams with XMLHttpRequest for a detailed explanation. See also downloading files. Sending binary dataThe The following example creates a text file on-the-fly and uses the
Sending typed arrays as binary dataYou can send JavaScript typed arrays as binary data as well.
This is building a 512-byte array of 8-bit integers and sending it; you can use any binary data you'd like, of course. Submitting forms and uploading filesPlease, read this paragraph. |