Blob()
The Blob() constructor returns a
new Blob object. The content of the blob consists of the concatenation
of the values given in the parameter array.
Syntax
new Blob(array)
new Blob(array, options)
Parameters
array-
An iterable object such as an
Array, havingArrayBuffers,TypedArrays,DataViews,Blobs, strings, or a mix of any of such elements, that will be put inside theBlob. Note that strings here are encoded as UTF-8, unlike the usual JavaScript UTF-16 strings. optionsOptional-
An object which may specify any of the following properties:
typeOptional-
The MIME type of the data that will be stored into the blob. The default value is the empty string, (
""). endingsOptional Non-standard-
How to interpret newline characters (
\n) within the contents, if the data is text. The default value,transparent, copies newline characters into the blob without changing them. To convert newlines to the host system's native convention, specify the valuenative.
Return value
A new Blob object containing the specified data.
Examples
const array = ['<q id="a"><span id="b">hey!</span></q>']; // an array consisting of a single string
const blob = new Blob(array, { type: "text/html" }); // the blob
Specifications
| Specification |
|---|
| File API # constructorBlob |
Browser compatibility
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