title: How to delete the key of the object based on user input?
body: <p>I have an object which basically consists of some of the names of cars. I just want to <strong>delete the key of that object</strong> based on user input.</p>
  
  <p>For instance:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>let cars = {
    car1: 'BMW',
    car2: 'Lambo',
    car3: 'Mercedes'
  };
  
  const deleteCar = (car) =&gt; {
    delete cars.car;
  }
  
  deleteCar('car1');
  console.log(cars);</code></pre>
  </div>
  </div>
  </p>
  
  <p>As you can see, it doesn't actually delete the key from the object. How can I do this?</p>