blob.slice([start[, end[, type]]])
-
start
<number> 起始索引。¥
start
<number> The starting index. -
end
<number> 结束索引。¥
end
<number> The ending index. -
type
<string> 新Blob
的内容类型¥
type
<string> The content-type for the newBlob
创建并返回包含此 Blob
对象数据子集的新 Blob
。原来的 Blob
没有改动。
¥Creates and returns a new Blob
containing a subset of this Blob
objects
data. The original Blob
is not altered.