Blob()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

Конструктор Blob() возвращает новый объект Blob. Содержимое blob состоит из объединённых значений, переданных в параметре array.

Синтаксис

var aBlob = new Blob( array, options );

Параметры

  • array - массив Array из объектов ArrayBuffer, ArrayBufferView, Blob, DOMString, или смесь любых из подобных объектов, которая может быть размещена внутри Blob. DOMStrings представлены в кодировке UTF-8.

  • options is an optional BlobPropertyBag dictionary which may specify the following two attributes:

    • type, with a default value of "", that represents the MIME type of the content of the array that will be put in the blob.
    • endings, with a default value of "transparent", that specifies how strings containing the line ending character \n are to be written out. It is one of the two values: "native", meaning that line ending characters are changed to match host OS filesystem convention, or "transparent", meaning that endings are stored in the blob without change.

Пример

js
var aFileParts = ['<a id="a"><b id="b">hey!</b></a>']; // an array consisting of a single DOMString
var oMyBlob = new Blob(aFileParts, { type: "text/html" }); // the blob

Спецификации

Specification
File API
# constructorBlob

Совместимость с браузерами

Смотрите также

  • The deprecated BlobBuilder which this constructor replaces.