title: What is the use of `${}` in Angular?
body: <p>I sometimes see this kind of syntax inside backticks in TypeScript component files in Angular projects:</p>
  
  <pre><code>&lt;div ${selector} [inDemo]="false" [config]="demoConfig"&gt;Demo Content&lt;/div&gt;
  </code></pre>
  
  <p>Can somebody explain me this specific attribute <code>${}</code>? </p>
  
  <p>How does it work and when should I use it?</p>