Blob.slice()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨julho de 2015⁩.

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.