title: JavaScript plus sign in front of function expression
body: <p>I’ve been looking for information about immediately invoked functions, and somewhere I stumbled on this notation:</p>
  
  <pre><code>+function(){console.log("Something.")}()
  </code></pre>
  
  <p>Can someone explain to me what the <code>+</code> sign in front of the function means/does?</p>