mirror of https://github.com/koajs/examples.git synced 2026-01-18 14:38:19 +00:00

Victor Nystad c6aaca4a20 use class syntax in stream-view

- Add 'use strict' to view.js
- Remove the harmony flag from README
- Remove iojs and add node 4 and 6 to .travis.yml

2016-07-22 22:12:18 +02:00

stream-view

This is a "Hello World" application, using a view that inherits from a Readable stream.

To invoke, the following command begins listening on localhost:3000.

node app.js

To see results:

http://localhost:3000

Interesting points

The main function of app.js instantiates a "View" from the view.js file.
The View overrides the Readable's _read() function with an empty function.
The View also overrides the Readable's render() function to do the following:
Immediately push out the text for the <head> of the page
Yield to a function that will ultimately (in the next tick) return the "Hello World" text. The render() function pauses at that point.
When that function returns, render() resumes, and assigns the return value to the body variable
Push out the returned text wrapped in <body> tags
Push out the closing </html> tag and
Close the connection with push(null)