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web api instance method

FileReader: readAsArrayBuffer() method

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Available in workers

The readAsArrayBuffer() method of the FileReader interface is used to start reading the contents of a specified Blob or File. When the read operation is finished, the readyState property becomes DONE, and the loadend event is triggered. At that time, the result property contains an ArrayBuffer representing the file’s data.

[!NOTE] The arrayBuffer() method is a newer promise-based API to read a file as an array buffer.

Syntax

readAsArrayBuffer(blob)

Parameters

  • blob
    • : The Blob or File from which to read.

Return value

None (undefined).

Specifications

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibility

Browser compatibilityCompatibility data is available on the canonical MDN page.

See also