Update ReadableStream

files/en-us/web/api/readablestream/readablestream/index.md

@@ -145,6 +145,25 @@ const stream = new ReadableStream({
 });
 ```
 
+A useful way to construct a `ReadableStream` from a variety of input types is to use the body property of a {{domxref("Response.Response","Response")}} object
+
+```js
+function newReadableStream(content) {
+  return new Response(content).body;
+}
+
+const newStream = newReadableStream("Hello World");
+
+const decoder = new TextDecoder();
+
+for await (const chunk of newStream) {
+  console.log(decoder.decode(chunk)); //Hello World
+}
+```
+
+
+An object defining a body for the response can be `null` (which is the default value), or one of {{domxref("Blob")}}, {{jsxref("ArrayBuffer")}}, {{jsxref("TypedArray")}}, {{jsxref("DataView")}}, {{domxref("FormData")}}, {{domxref("ReadableStream")}}, {{domxref("URLSearchParams")}}, {{jsxref("String")}}, or `string` literal.
+
 ## Specifications
 
 {{Specifications}}