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React Example with JSX

A Pen By Nick Raienko

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

     

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About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient. For instance, CoffeeScript can help prevent easy-to-make mistakes and offer a cleaner syntax and Babel can bring ECMAScript 6 features to browsers that only support ECMAScript 5.

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You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

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Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

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HTML

            
              <div id="mount-point"></div>
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JS

            
              var Circle = React.createClass({

  styler: {
    width: "100px",
    height: "100px",
    mozBorderRadius: "50%",
    webkitBorderRadius: "50%",
    borderRadius: "50%",
    background: "red"
  },

  render: function() {
    return (
      <div style = {this.styler}></div>
    );
  }
});
 
React.render(
  <Circle />, 
  document.getElementById('mount-point'));
!
999px
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