Blob.json

{
  "name": "Blob",
  "description": "A Blob object represents a file-like object of immutable, raw data. Blobs represent data that isn\u0027t necessarily in a JavaScript-native format. The File interface is based on Blob, inheriting blob functionality and expanding it to support files on the user\u0027s system.",
  "members": [
    {
      "name": "Blob(blobParts[, options])",
      "link": "/en-US/docs/Web/API/Blob/Blob",
      "description": "Returns a newly created Blob object whose content consists of the concatenation of the array of values given in parameter."
    },
    {
      "name": "Blob.size",
      "link": "/en-US/docs/Web/API/Blob/size",
      "description": "The size, in bytes, of the data contained in the Blob object."
    },
    {
      "name": "Blob.type",
      "link": "/en-US/docs/Web/API/Blob/type",
      "description": "A string indicating the MIME type of the data contained in the Blob. If the type is unknown, this string is empty."
    },
    {
      "name": "Blob.slice([start[, end[, contentType]]])",
      "link": "/en-US/docs/Web/API/Blob/slice",
      "description": "Returns a new Blob object containing the data in the specified range of bytes of the source Blob.",
      "parameters": [
        {
          "name": "start Optional",
          "description": "An index into the Blob indicating the first byte to include in the new Blob. If you specify a negative value, it\u0027s 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."
        },
        {
          "name": "end Optional",
          "description": "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\u0027s 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."
        },
        {
          "name": "contentType Optional",
          "description": "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."
        }
      ]
    }
  ]
}