Using JSX and React #React #reactjs #javascript #Framework #programming

Using JSX and React  #React #reactjs #javascript #Framework #programming

  • Form creation is easy with JSX and sub-components, for example: – – To make this work, you must create the sub-components as attributes of the main component: – – To use some JavaScript to create a result for use in an attribute value, React just needs you to wrap it…
  • _disconnectFrom(userId); self.emit(events.DISCONNECT, userId); console.log(‘User disconnected’, userId); }); }); console.log(‘Connecting with username’, username); this.peer = new Peer(username, { host: location.hostname, port: 9000, path: ‘/chat’ }); this.peer.on(‘open’, function (userId) { self.setUsername(userId); }); this.peer.on(‘connection’, function (conn) { self.
  • First we use to establish signalling of a new user connected via the as so: – – js ChatServer.prototype.connect = function (username) { var self = this; this.setUsername(username); this.socket = io(); this.socket.on(‘connect’, function () { self.socket.on(events.CONNECT, function (userId) { if (userId === self.getUsername()) { return; } self.
  • _connectTo(userId); self.emit(events.CONNECT, userId); console.log(‘User connected’, userId); }); – – Then, to connect to the PeerServer, we use the following: – – We then listen for events via the method: – – We also have our JSX inside components in the directory.
  • Now it’s as simple as pushing your code to heroku: – – Once the push is finished, you will be able to start your web service with the following: – – Now just visit the URL provided, or as a shortcut use the command as so: – – You’ve learned…

What You’ll Be CreatingJSX is similar to a mix of XML and HTML. You use JSX within React code to easily create components for your apps. JSX transforms into JavaScript when React compiles the…

JSX is similar to a mix of XML and HTML. You use JSX within React code to easily create components for your apps. JSX transforms into JavaScript when React compiles the code.

The beauty of React is that you can create reusable code and easily structure your app from a component-based mindset. Finally, the gap between mocking up wireframes of semantically formed ideas and implementing them has never been closer.

Your First Taste of JSX

Here is an example of JSX being used to render HTML:

To create a component, just use a local variable that starts with an upper-case letter, e.g.:

“`js var MyComponent = React.createClass({/…/}); var myElement = ;

ReactDOM.render(myElement, document.getElementById(‘example’)); “`

, for example.

Nesting Tags

Specify children inside your JSX as so:

“`js var User, Profile;

// You write in JSX: var app = click ;

// What will get outputted in JS: var app = React.createElement( User, {className:”vip-user”}, React.createElement(Profile, null, “click”) ); “`

Testing JSX

Use the Babel REPL to test out JSX.

Sub-Components and Namespaces

Form creation is easy with JSX and sub-components, for example:

“`js var Form = FormComponent;

var App = (

To make this work, you must create the sub-components as attributes of the main component:

“`js var FormComponent…

Using JSX and React