react这两种写法有区别么

Question

<div id="example"></div>       <script type="text/babel">        ReactDOM.render(      <div className="ss" >Hello, world!</div>,example    );    </script>    <div id="example"></div>       <script type="text/babel">        ReactDOM.render(      <div className="ss" >Hello, world!</div>,document.getElementById('example')    );    </script>