Class “Blob”
Represents raw data of a given type.
| Constructor | public |
| Singleton | No |
| Namespace | global |
| Direct subclasses | File |
| JSX support | No |
Constructor
new Blob(blobParts?, options?)
| Parameter | Type | Optional | Description |
|---|---|---|---|
| blobParts | any[] |
Yes | Array of ArrayBuffer, Blob, string, or any typed array. Any other type will be stringified. Strings are encoded as UTF-8. |
| options | {type?: string} |
Yes | type represents the MIME type of the blob content. Defaults to empty string. |
Methods
arrayBuffer()
Reads the blob data into an ArrayBuffer and returns it in a promise. Each call creates a new in-memory copy of the data.
Returns Promise<ArrayBuffer>
text()
Decodes the blob data as a string and returns it in a promise.
Returns Promise<string>
Properties
size
Size of the blob data in bytes
| Type | number |
| Default | 0 |
| Settable | No |
| Change events | No |
This property can only be set via constructor. Once set, it cannot change anymore.
type
The MIME type of the blob data
| Type | string |
| Default | '''' |
| Settable | No |
| Change events | No |
This property can only be set via constructor. Once set, it cannot change anymore.
