Merge pull request #222750 from pauljewellmsft/pauljewell-js-download

Add detail for JS in the browser

Author: prmerger-automator[bot]

articles/storage/blobs/storage-blob-download-javascript.md

@@ -58,7 +58,7 @@ async function downloadBlobAsStream(containerClient, blobName, writableStream) {
 
 ## Download to a string
 
-The following example downloads a blob to a string with [BlobClient.download](/javascript/api/@azure/storage-blob/blobclient#@azure-storage-blob-blobclient-download) method.  
+The following Node.js example downloads a blob to a string with [BlobClient.download](/javascript/api/@azure/storage-blob/blobclient#@azure-storage-blob-blobclient-download) method. In Node.js, blob data returns in a `readableStreamBody`.
 
 ```javascript
 
@@ -86,6 +86,8 @@ async function streamToBuffer(readableStream) {
 }
 ```
 
+If you're working with JavaScript in the browser, blob data returns in a promise [blobBody](/javascript/api/@azure/storage-blob/blobdownloadresponseparsed#@azure-storage-blob-blobdownloadresponseparsed-blobbody). To learn more, see the example usage for browsers at [BlobClient.download](/javascript/api/@azure/storage-blob/blobclient#@azure-storage-blob-blobclient-download).
+
 ## See also
 
 - [Get started with Azure Blob Storage and JavaScript](storage-blob-javascript-get-started.md)