Lan Qingyong lanqy

React "Hello World" Examples

Below are a small collection of React examples to get anyone started using React. They progress from simpler to more complex/full featured.

They will hopefully get you over the initial learning curve of the hard parts of React (JSX, props vs. state, lifecycle events, etc).

Usage

You will want to create an index.html file and copy/paste the contents of 1-base.html and then create a scripts.js file and copy/paste the contents of one of the examples into it.

W3C Standards for Web Apps on Mobile (After HTML5)

Simple and reorganized version of http://www.w3.org/2014/07/mobile-web-app-state/

Community

System Applications Working Group
http://www.w3.org/2012/05/sysapps-wg-charter.html

Device APIs Working Group

Virtual DOM and diffing algorithm

There was a [great article][1] about how react implements it's virtual DOM. There are some really interesting ideas in there but they are deeply buried in the implementation of the React framework.

However, it's possible to implement just the virtual DOM and diff algorithm on it's own as a set of independent modules.

Generate the list yourself:

$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep UI_APPEARANCE_SELECTOR ./*     | \
  sed 's/NS_AVAILABLE_IOS(.*)//g'     | \
  sed 's/NS_DEPRECATED_IOS(.*)//g'    | \
  sed 's/API_AVAILABLE(.*)//g'        | \
  sed 's/API_UNAVAILABLE(.*)//g'      | \
 sed 's/UI_APPEARANCE_SELECTOR//g' | \

	package main

	import (
	"fmt"
	"io/ioutil"
	"os"
	"path/filepath"
	"strings"
	)

	var url = "Hello World";
	var data = [];
	for (var i = 0; i < url.length; i++){
	data.push(url.charCodeAt(i));
	}

	/** @jsx React.DOM */

	var Graphic = React.createClass({

	componentDidMount: function() {
	var context = this.getDOMNode().getContext('2d');
	this.paint(context);
	},

	componentDidUpdate: function() {

	(function() {
	// Do not use this library. This is just a fun example to prove a
	// point.

	var Bloop = window.Bloop = {};

	var mountId = 0;
	function newMountId() {
	return mountId++;
	}

	func readLine(path string) {
	inFile, _ := os.Open(path)
	defer inFile.Close()
	scanner := bufio.NewScanner(inFile)
	scanner.Split(bufio.ScanLines)

	for scanner.Scan() {
	fmt.Println(scanner.Text())
	}
	}

	/**
	* Creates a new Uint8Array based on two different ArrayBuffers
	*
	* @private
	* @param {ArrayBuffers} buffer1 The first buffer.
	* @param {ArrayBuffers} buffer2 The second buffer.
	* @return {ArrayBuffers} The new ArrayBuffer created out of the two.
	*/
	var _appendBuffer = function(buffer1, buffer2) {
	var tmp = new Uint8Array(buffer1.byteLength + buffer2.byteLength);