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React Without ES6

React Without ES6

Normally you would define a React component as a plain JavaScript class:

class Greeting extends React.Component {
  render() {
    return <h1>Hello, {this.props.name}</h1>;
  }
}

If you don't use ES6 yet, you may use the create-react-class module instead:

var createReactClass = require('create-react-class');
var Greeting = createReactClass({
  render: function() {
    return <h1>Hello, {this.props.name}</h1>;
  }
});

The API of ES6 classes is similar to createReactClass() with a few exceptions.

Declaring Default Props

With functions and ES6 classes defaultProps is defined as a property on the component itself:

class Greeting extends React.Component {
  // ...
}

Greeting.defaultProps