The text()
method in the
Blob
interface returns a Promise
that resolves with a
string containing the contents of the blob, interpreted as UTF-8.
Syntax
var textPromise = blob.text();
blob.text().then(text => /* do something with the text */);
var text = await blob.text();
Parameters
None.
Returns
A promise that resolves with a USVString
which contains the blob's data
as a text string. The data is always presumed to be in UTF-8 format.
Usage notes
The FileReader
method readAsText()
is an older method that performs a similar function. It works on both
Blob
and File
objects. There are two key differences:
Blob.text()
returns a promise, whereasFileReader.readAsText()
is an event based API.Blob.text()
always uses UTF-8 as encoding, whileFileReader.readAsText()
can use a different encoding depending on the blob's type and a specified encoding name.
Specifications
Specification | Status | Comment |
---|---|---|
File API The definition of 'Blob.text()' in that specification. |
Working Draft |
Browser compatibility
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