what is a blob in javascript

1//The Blob() constructor returns a new Blob object. The content of the blob
2//consists of the concatenation of the values given in the parameter array.
3
4//syntax
5var newBlob = new Blob(array, options);
6

1(() => {
2 try {
3  return !!new Blob();
4 } catch (e) {
5  return false;
6 }
7})()
8