title: eslint: disable warning - `defined but never used` for specific function?
body: <p>So I have this function:</p>
  
  <pre><code>function render(){
      // do stuff
  }
  </code></pre>
  
  <p>I do not call that function, because it is called from html as an event function, like:</p>
  
  <pre><code>&lt;textarea id="input" class="input-box" onkeyup="render()"&gt;&lt;/textarea&gt;
  </code></pre>
  
  <p>Well <code>eslint</code> does not see that, so it gives that warning (<code>render</code> is defined, but never used). Is there a way to specify that function is called elsewhere? Or just mute the warning?</p>
  
  <p>For example if global variable is used, I can do <code>/* global SomeVar*/</code> and it will mute warning of not defined variable. Maybe something similar could be done on functions like in example?</p>