Concatenating variables and strings in React
<p>Is there a way to incorporate React's curly brace notation and an <code>href</code> tag? Say we have the following value in the state:</p>

<pre><code>{this.state.id}
</code></pre>

<p>and the following HTML attributes on a tag:</p>

<pre><code>href="#demo1"
id="demo1"
</code></pre>

<p>Is there a way I can add the <code>id</code> state to the HTML attribute to get something like this:</p>

<pre><code>href={"#demo + {this.state.id}"}
</code></pre>

<p>Which will yield:</p>

<pre><code>#demo1
</code></pre>