readAsArrayBuffer

The readAsArrayBuffer method is a function available in web browsers as part of the File API. It is used to read the contents of a File or Blob object asynchronously. When invoked, it returns an ArrayBuffer object, which represents a generic, fixed-length raw binary data buffer.

The process of reading the file is asynchronous. This means that the script will not wait for the reading to complete before continuing to execute other code. Instead, the result is handled through an event listener. Typically, an event listener is attached to the `loadend` event of the FileReader object. When the reading operation is finished, whether successfully or with an error, the `loadend` event fires. The result of the read operation, the ArrayBuffer, can then be accessed via the `result` property of the FileReader object.

The ArrayBuffer obtained from readAsArrayBuffer can be further processed. For instance, it can be used to create TypedArray objects like Uint8Array or Int32Array, which provide a more convenient way to access and manipulate the binary data in various formats. This is particularly useful for tasks such as image manipulation, audio processing, or handling data from network requests. The method takes the File or Blob object as its argument.