Blob.slice()

O método Blob.slice() é usado para criar um novo Blob object contendo os dados no intervalo especificado de bytes da fonte Blob.

Nota: Nota: Esteja ciente de que o método slice () tem prefixos de fornecedores em alguns navegadores e versões: blob.mozSlice () para Firefox 12 e anteriores e blob.webkitSlice () no Safari. Uma versão antiga do método slice (), sem prefixos de fornecedor, tinha uma semântica diferente e é obsoleta

Sintaxe

let blob = instanceOfBlob.slice([start [, end [, contentType]]]);

Parâmetros

start Optional: An index into the Blob indicating the first byte to include in the new Blob. If you specify a negative value, it's treated as an offset from the end of the string toward the beginning. For example, -10 would be the 10th from last byte in the Blob. The default value is 0. If you specify a value for start that is larger than the size of the source Blob, the returned Blob has size 0 and contains no data.
end Optional: An index into the Blob indicating the first byte that will *not* be included in the new Blob (i.e. the byte exactly at this index is not included). If you specify a negative value, it's treated as an offset from the end of the string toward the beginning. For example, -10 would be the 10th from last byte in the Blob. The default value is size.
contentType Optional: The content type to assign to the new Blob; this will be the value of its type property. The default value is an empty string.

Return value

A new Blob object containing the specified data from the source Blob.

Specifications

Specification	Status	Comment
File API The definition of 'Blob.slice()' in that specification.	Rascunho atual	Initial definition

Compatibilidade com navegadores

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