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.
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.
js
text()
None.
A promise that resolves with a string which contains the blob's data as a text string. The data is always presumed to be in UTF-8 format.
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, whereas FileReader.readAsText()
is an event based API. Blob.text()
always uses UTF-8 as encoding, while FileReader.readAsText()
can use a different encoding depending on the blob's type and a specified encoding name. Specification |
---|
File API # dom-blob-text |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
text |
76 | 79 | 69 | No | 63 | 14 | 76 | 76 | 79 | 54 | 14 | 12.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/Blob/text