reactintro/09.jsx.html.html at master · linyutg/reactintro · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <title>HTML vs JSX</title>
    <meta charset="utf-8" />
    <style>
      body {
        font-family: -apple-system, sans-serif;
      }
      a {
        cursor: pointer;
      }
    </style>
  </head>
  <body>
    <div id="app1"></div>
    <div id="app2"></div>
    <div id="app3"></div>
    <div id="app4"></div>
    <script src="react/react.js"></script>
    <script src="react/react-dom.js"></script>
    <script src="react/babel.js"></script>
    <script type="text/babel">
      function InvalidExample() {
        const em = <em class="important" />;
        const label = <label for="thatInput" />;
        return (
          <div>
            {em}
            {label}
          </div>
        );
      }

      function Example() {
        const em = <em className="important" />;
        const label = <label htmlFor="thatInput" />;
        return (
          <div>
            {em}
            {label}
          </div>
        );
      }

      function InvalidStyle() {
        return <em style="font-size: 2em; line-height: 1.6" />;
      }

      function ValidStyle() {
        const styles = {
          fontSize: "2em",
          lineHeight: "1.6",
        };
        return <em style={styles}>Valid style</em>;
      }

      function InlineStyle() {
        return <em style={{ fontSize: "2em", lineHeight: "1.6" }}>Inline style</em>;
      }

      function reticulateSplines() {
        alert("Will do!");
      }

      function Camel() {
        const invalid = <a onclick="reticulateSplines()">nothing happens</a>;
        const valid = <a onClick={reticulateSplines}>something happens</a>;
        return (
          <span>
            {invalid}
            <br />
            {valid}
          </span>
        );
      }

      ReactDOM.render(<Example />, document.getElementById("app1"));
      ReactDOM.render(<ValidStyle />, document.getElementById("app2"));
      ReactDOM.render(<InlineStyle />, document.getElementById("app3"));
      ReactDOM.render(<Camel />, document.getElementById("app4"));
    </script>
  </body>
</html>